breed specific legislation

Transcription

breed specific legislation
pit bull” dogs
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A N I M A L FA R M
FOUNDATION, INC.
SINCE 1985
The Failure of Breed Specific Legislation
BREED SPECIFIC LEGISLATION
ANIMAL FARM FOUNDATION
Humane communities are safer communities
for people and pets.
Organizations That Do Not Endorse Breed
Specific Legislation
Our Research Does Not Support Breed
Specific Legislation
Statement from the Centers for Disease Control (CDC) &
American Veterinary Medical Association (AVMA)
Breed Specific Legislation Does Not
Reduce Dog Bites: Study Published by the Journal
of American Veterinary Medical Association
Summary Report from NCRC
The Role of Breed in Dog Bite and Risk
Prevention
From the Journal of American Veterinary Medical Association
Dog Breed Specific Legislation: The Cost to
People, Pets and Veterinarians, and the Damage to the
Human-Animal Bond
By Jane Berkey
Experts have proven that Breed Specific Legislation does
not make communities safer for people or pets. It is
costly, ineffective, and it undermines the human-canine
bond.
Regulating breeds puts the focus on the dogs, without
addressing owner behavior and owner responsibility to
the animal and the community. For more information
on breed neutral practices that create and support safe,
humane communities, please see our booklet: Building
Safe Communities.
For more information, please visit our website:
www.animalfarmfoundation.org
or contact us at: [email protected]
A Comparison of Visual and DNA
Identification of Breeds of Dogs
By Victoria Voith PhD, DVM, DACVB
Breed Specific or Looks Specific
Kristopher Irizarry, PhD Assistant Professor, Bioinformatics,
Genetics, Genomics, Western University
Survey Confirms Visual I.D. by Animal
Professionals Unreliable
Survey Published by the College of Veterinary Medicine at
the University of Florida
Summary Report from NCRC
Beyond Breed
From Best Friends Animal Society
Aggression and Dogs: "No significant difference
found between breeds."
By Esther Schalke PhD, DVM
The Cruel Cost of BSL
From StubbyDog
pit bull” dogs
for “
Case Study: Denver
Selective Counting and the Costs to Dogs and People
From NCRC
and opportun
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Obama Administration Opposes
Breed-Specific Legislation
Summary Report from NCRC
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Fear vs Fact
From Animal Farm Foundation
A N I M A L FA R M
FOUNDATION, INC.
SINCE 1985
www.animalfarmfoundation.org
LEGISL ATION
CONTENTS
The following organizations do not endorse breed specific legislation (BSL), also known as breed
discriminatory legislation (BDL). This list is not intended to be comprehensive, as there are
numerous other organizations that have publicly voiced that they do not endorse BSL.
The American Bar Association (ABA)
“…the American Bar Association urges all state, territorial, and local legislative bodies and
governmental agencies to adopt comprehensive breed-neutral dangerous dog/reckless owner laws
that ensure due process protections for owners, encourage responsible pet ownership and focus
on the behavior of both dog owners and dogs, and to repeal any breed discriminatory or breed
specific provisions.”
(http://www.abajournal.com/news/article/pit_bull_bias_aba_house_oks_resolution_urging_breedneutral_dog_laws/)
American Kennel Club (AKC)
“The American Kennel Club supports reasonable, enforceable, non-discriminatory laws to govern
the ownership of dogs. The AKC believes that dog owners should be responsible for their dogs.
We support laws that: establish a fair process by which specific dogs are identified as “dangerous”
based on stated, measurable actions; impose appropriate penalties on irresponsible owners; and
establish a well-defined method for dealing with dogs proven to be dangerous. We believe that, if
necessary, dogs proven to be “dangerous” may need to be humanely destroyed.The AKC strongly
opposes any legislation that determines a dog to be “dangerous” based on specific breeds or
phenotypic classes of dogs.
(http://www.akc.org/pdfs/canine_legislation/PBLEG2.pdf)
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American Society for the Prevention of Cruelty to Animals (ASPCA)
“The American Society for the Prevention of Cruelty to Animals supports reasonable “leash” laws
and laws that regulate dogs who have caused unjustifiable injury or who present substantial
danger to the public. However, the ASPCA opposes laws that ban specific breeds of dogs or
that discriminate against particular breeds. These laws unfairly discriminate against responsible
dog guardians based solely on their choice of breed. Such laws also fail
to achieve the desired goal of stopping illegal activities such as dog
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fighting, and breeding and/or training dogs to be aggressive. The
ent
ASPCA believes that strict enforcement of laws that ban animal
fighting, and breeding and/or training animals to fight, is the proper
means to address the problem.”
(http://www.aspca.org/about-us/aspca-policy-and-positionstatements/breed-specific-legislation)
A N I M A L FA R M
pit bull” dogs
for “
FOUNDATION, INC.
SINCE 1985
www.animalfarmfoundation.org
(continued on next page)
LEGISL ATION
ORGANIZATIONS THAT DO NOT
ENDORSE BREED SPECIFIC
LEGISLATION (BSL)
American Veterinary Medical Association (AVMA)
“The American Veterinary Medical Association supports dangerous animal legislation by state, county, or municipal
governments provided that legislation does not refer to specific breeds or classes of animals. This legislation
should be directed at fostering safety and protection of the general public from animals classified as dangerous.”
(https://www.avma.org/KB/Policies/Pages/Dangerous-Animal-Legislation.aspx)
American Veterinary Medical Association PRIT (AVMA PLIT)
“The AVMA does not support the adoption of breed specific bans by insurers and does support education
programs to teach the public proper safety precautions when dealing with strange or dangerous dogs.”
(www.avmaplit.com)
American Veterinary Society of Animal Behavior (AVSAB)
“The AVSAB’s position is that such legislation—often called breed-specific legislation (BSL)−is ineffective, and can
lead to a false sense of community safety as well as welfare concerns for dogs identified (often incorrectly) as
\belonging to specific breeds. The importance of the reduction of dog bites is critical; however, the AVSAB’s view
is that matching pet dogs to appropriate households,adequate early socialization and appropriate training, and
owner and community education are most effective in preventing dog bites. Therefore, the AVSAB does support
appropriate legislation regarding dangerous dogs, provided that it is education based and not breed specific.”
(http://avsabonline.org/uploads/position_statements/Breed-Specific_Legislation-download-_8-18-14.pdf)
Animal Farm Foundation (AFF)
“There has never been any evidence that breed bans or restrictions contribute to improved public safety.
Regulating breeds puts the focus on the dog, without addressing owner behavior and owner responsibility to
the animal and the community.”
(www.animalfarmfoundation.org)
Association of Pet Dog Trainers (APDT)
“The Association of Pet dog Trainers APDT supports the adoption or enforcement of a program for the control
of potentially dangerous or vicious dogs that is fair, non-discriminatory and addresses dogs that are shown to be
dangerous by their actions. The APDT opposes any law that deems a dog as dangerous or vicious based on
appearance, breed or phenotype. Canine temperaments are widely varied, and behavior cannot be predicted
by physical features such as head shape, coat length, muscle to bone ratio, etc. The only predictor of behavior
is behavior. As an organization comprised of dog trainers, behaviorists and other animal professionals, the APDT
is fully aware that any dog can bite, any dog can maim, and any dog can kill. A dangerous or vicious dog is a product
of a combination of individual genetics, upbringing, socialization, and lack of proper training. The solution to
preventing dog bites is education of owners, breeders, and the general public about aggression prevention, not
legislation directed at certain breeds. Singling out and publicly demonizing certain breeds as dangerous is unfair,
discriminatory, and does an immense disservice to those breeds and the people who care about them. Even more
chilling, breed specific legislation encourages the faulty public perception of other breeds as being inherently safe.
This can lead misguided individuals to engage in unsafe conduct with other breeds that can result in injury or
death by individual representatives of those breeds mistakenly perceived as safe. Also, designating certain breeds
as inherently dangerous implies to the public that behavior is not effectively influenced, positively or negatively,
by training. This misconception will likely produce a growing number of dangerous dogs as misinformed,
complacent dog owners fail to practice responsible aggression-prevention measures.”
(http://www.apdt.com/about/ps/breed_specific_legis.aspx)
(continued on next page)
Best Friends Animal Society (BFAS)
“Best Friends opposes breed-discriminatory legislation (also called breed-specific legislation, BSL), which arbitrarily
targets particular breeds. Breed-discriminatory laws are not only ineffective at improving community safety, they
are extremely expensive to enforce and deplete needed resources from animal control.”
(www.bestfriends.org)
British Veterinary Association (BVA):
“The BVA has…long been opposed in principle to any proposal or legislation that singles out particular breeds
of dogs rather than targeting individual aggressive dogs. The problems caused by dangerous dogs will never be
solved until dog owners appreciate that they are responsible for the actions of their animals."
(http://www.bva.co.uk/news/Dangerous_dogs.aspx)
Centers for Disease Control & Prevention (CDC)
“A CDC study on fatal dog bites lists the breeds involved in fatal attacks over 20 years (Breeds of dogs involved
in fatal human attacks in the United States between 1979 and 1998). It does not identify specific breeds that are
most likely to bite or kill, and thus is not appropriate for policy-making decisions related to the topic. Each year,
4.7 million Americans are bitten by dogs. These bites result in approximately 16 fatalities; about 0.0002 percent
of the total number of people bitten. These relatively few fatalities offer the only available information about
breeds involved in dog bites. There is currently no accurate way to identify the number of dogs of a particular
breed, and consequently no measure to determine which breeds are more likely to bite or kill. Many practical
alternatives to breed-specific policies exist and hold promise for preventing dog bites. For prevention ideas and
model policies for control of dangerous dogs, please see the American Veterinary Medical Association (AVMA)
Task Force on Canine Aggression and Human-Canine Interactions: A Community Aproach to Dog Bite Prevention
(https://www.avma.org/KB/Resources/Reports/Pages/A-Community-Approach-to-Dog-Bite-Prevention.aspx)
(http://www.cdc.gov/homeandrecreationalsafety/dog-bites/index.html)
Humane Society of the United States (HSUS)
“The HSUS opposes legislation aimed at eradicating or strictly regulating dogs based solely on their breed for
a number of reasons. Breed Specific Legislation (BSL) is a common first approach that many communities
take. Thankfully, once research is conducted most community leaders correctly realize that BSL won't solve the
problems they face with dangerous dogs. If the goal is to offer communities better protection from dogs who are
dangerous, then thoughtful legislation that addresses responsible dog keeping is in order. Legislation aimed at
punishing the owner of the dog rather than punishing the dog is far more effective in reducing the number of dog
bites and attacks. Well enforced, non-breed-specific laws offer an effective and fair solution to the problem of
dangerous dogs in all communities. Comprehensive "dog bite" legislation, coupled with better consumer education
and forced responsible pet keeping efforts, would do far more to protect communities than banning a specific
breed. The HSUS encourages you to read the Community Approach to Dog Bite Prevention by the American
Veterinary Medical Association. The HSUS is committed to keeping dogs and people safe and is available and
willing to offer advice, educational materials and model legislation to communities interested in decreasing the
incidence of dog bites and aggression.”
(http://www.humanesociety.org/issues/breed-specific-legislation/fact_sheets/breed-specific-legislation-flaws.html)
(continued on next page)
Maryland Veterinary Medical Association
“The Maryland Veterinary Medical Association encourages and supports ordinances that promote responsible
pet ownership and at the same time protects the public from dangerous and vicious animals.We oppose legislation
that restricts or prohibits certain breeds of dogs, since we do not believe this is a workable solution.”
(http://www.mdvma.org/legislative.asp)
National Animal Control Association (NACA)
“Dangerous and/or vicious animals should be labeled as such as a result of their actions or behavior and not
because of their breed. Any animal may exhibit aggressive behavior regard-less of breed. Accurately identifying a
specific animal’s lineage for prosecution purposes may be extremely difficult. Additionally, breed specific legislation
may create an undue burden to owners who otherwise have demonstrated proper pet management and
responsibility. Agencies should encourage enactment and stringent enforcement of dangerous/vicious dog laws.
When applicable, agencies should not hesitate to prosecute owners for murder, manslaughter, or similar violations
resulting from their animal’s actions, and their owner lack of responsibility. Laws should clearly define “dangerous”
or “vicious”, and provide for established penalties. Penalties may include fines, imprisonment, and/or the
relinquishing of total privileges to pet ownership. If a dangerous/vicious animal is allowed to be kept, laws should
specify methods of secure confinement and control. A dangerous/vicious animal when kept outside should
be confined in an escape-proof enclosure which is locked and secured on all six sides. Signs should be posted
at property entrances and be visible from the nearest sidewalk or street. The licensing record could include a
notation which will immediately identify an animal which has been deemed dangerous or vicious.”
(http://www.nacanet.org/guidelines.html#dangerous)
National Canine Research Council (NCRC)
“There is no scientifically valid evidence and no reasonable argument to support breed-specific legislation. Instead
of discriminating against breeds, take responsibility for dog ownership and management practices.”
(www.nationalcanineresearchcouncil.com)
Royal Society for the Prevention of Cruelty to Animals - Australia (RSPCA):
“The RSPCA does not support breed specific legislation, also known as BSL. Our view, based on the available
international scientific evidence, is that any dog may be dangerous and that dogs should not be declared as
dangerous’ on the basis of breed. While we recognise that there is a strong genetic component in a dog’s
propensity for aggressive behaviour, their trigger point for aggression and capacity to inflict serious injury, these
factors are not isolated to any specific breed. The RSPCA does not believe that BSL is in any way effective in
preventing or reducing dog attacks or in protecting the public from dangerous dogs.”
(http://kb.rspca.org.au/What-is-the-RSPCAs-position-on-breed-specific-legislation_497.html)
Royal Society for the Prevention of Cruelty to Animals - United Kingdom (RSPCA):
"The focus should be on the other end of the lead - i.e. the owner. This means that any dog can be dangerous in
the wrong hands - e.g. mistreated or badly trained — regardless of its breed or type. For these reasons, the
RSPCA is opposed to BSL and would like to see it abolished.”
(http://www.rspca.org.uk/getinvolved/campaigns/companion/dogownership/bsl)
(continued on next page)
United Kennel Club (UKC)
“United Kennel Club believes that breed specific legislation is a poor choice for communities interested in
protecting citizens from dog bites and attacks. Breed specific legislation, or BSL, is the singling out of a breed or
breeds of dogs to take varying degrees of enforcement action against, in a weak attempt to reduce the numbers
of dog attacks. The majority of BSL is directed at American Pit Bull Terriers, proudly our number two breed, but
other breeds such as Rottweilers and Akitas are targeted as well. Realistically, the number of dog bites nationwide
has been fairly consistent over the last century, and there has not been any meaningful increase. Attempting to
attribute bites to a single breed and labeling that breed is fruitless, as there exists no real, factual data to show
that any one breed is more responsible for bites and attacks than others. Singling out a breed to attach blame
does not work to decrease dog attacks. Case in point, the Dutch government has lifted a 15-year ban on ‘pit
bulls’ because there has not been ANY decrease in dog bites. There are many other factors at play behind dog
attacks, such as the purpose the dog is used for, owner management and maintenance, neglect or cruelty factors,
and other variables such as sex, age, socialization, etc., that are not breed related. Not only is BSL ineffective, it
also increases costs to cities and communities to enforce these laws and defend the laws against challenges in
court. Some cities have overturned long standing bans due to a dramatic increase in enforcement costs and an
influx to animal control; the economic impact was far too great. BSL is also extremely difficult to enforce. Many
laws and ordinances either do not correctly identify what breeds are included, or are overly vague. Often these
laws include mixes of the listed breeds as well. There currently exists no legally accepted scientific method to
positively identify breeds or mixes, and many breeds look very similar, especially to the general public.While even
professionals have difficulty in identifying what a mix may be comprised of, inexperienced law enforcement officials
with no dog background are expected to identify mixtures, and end up with arbitrary and often incorrect
identifications. BSL results in punishing and ultimately driving away responsible owners of the targeted breed(s)
while having little to no impact on the actual cause of problems, those using dogs for illegal or immoral purposes.
Instead of enacting BSL, communities should be more aggressive in enforcement of dangerous dog, anti-fighting,
and anti-cruelty statutes. More emphasis must be placed on owner responsibility, as the majority of attacks are
due to owner neglect or mistreatment.Targeting the actions and non-action of owners will be more effective and
sensible in realistically decreasing dog attacks.”
(http://www.ukcdogs.com/WebSite.nsf/WebPages/ComBSLPosition)
United States Department of Justice (DOJ)
“The Department [of Justice] does not believe that it is either appropriate or consistent with the Americans with
Disabilities Act (ADA) to defer to local laws that prohibit certain breeds of dogs based on local concerns that
these breeds may have a history of unprovoked aggression or attacks. Such deference would have the effect of
limiting the rights of persons with disabilities under the ADA who use certain service animals based on where
they live rather than on whether the use of a particular animal poses a direct threat to the health and safety of
others [...]. State and local government entities have the ability to determine, on a case- by-case basis, whether a
particular service animal can be excluded based on that particular animal s actual behavior or history — not
based on fears or generalizations about how an animal or breed might behave. This ability to exclude an animal
whose behavior or history evidences a direct threat is sufficient to protect health and safety.”
(http://www.ada.gov/regs2010/titleII_2010/titleII_2010_regulations.htm)
(continued on next page)
The White House Administration:
“We don't support breed-specific legislation — research shows that bans on certain types of dogs are largely
ineffective and often a waste of public resources.”
(https://petitions.whitehouse.gov/petition/ban-and-outlaw-breed-specific-legislation-bsl-united-states-americafederal-level/d1WR0qcl)
“OUR RESEARCH DOES NOT SUPPORT
BREED-SPECIFIC LEGISLATION”
Almost every proponent of breed-specific legislation relies on one ten year old study to make
their case1. Both the CDC and the AVMA have warned that the findings of that study are not an
argument for breed legislation of any kind.
CENTERS FOR DISEASE CONTROL STATEMENT:
“[The study] does not identify specific breeds that are
most likely to bite or kill, and thus is not appropriate for
policy-making decisions related to the topic...There is
currently no accurate way to identify the number of dogs
of a particular breed, and consequently no measure to
determine which breeds are more likely to bite or kill.”
AVMA STATEMENT:
“In contrast to what has been reported in the news
media, the data...CANNOT be used to infer any breedspecific risk for dog bite fatalities...”
Instead of discriminating against breeds, take responsibility for dog ownership and management practices. The
CDC recommends “a community approach to dog bite
prevention” that focuses on improving the quality of
human-canine interactions and the care of all canine
species.
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WHY DEBATE WHAT THE EXPERTS
HAVE ALREADY CONCLUDED?
THERE IS NO SCIENTIFICALLY VALID
EVIDENCE AND NO REASONABLE ARGUMENT
TO SUPPORT BREED-SPECIFIC LEGISLATION.
A N I M A L FA R M
FOUNDATION, INC.
SINCE 1985
www.animalfarmfoundation.org
1(AVMA) Task Force on Canine Aggression and Human-Canine Interactions
(http://www.avma.org/public_health/dogbite/dogbite.pdf)
LEGISL ATION
~ Centers for Disease Control (CDC) & American Veterinary Medical Association (AVMA)
New Study Explains Why Breed Specific
Legislation Does Not Reduce Dog Bites i
Important article now available from JAVMA website.
October 1, 2010 -- For years, evidence has mounted that breed specific legislation (BSL) fails to reduce
dog bite incidents. The data supporting this conclusion has come from cities and counties all over North
America, and from four European countries.
An insightful new analysis, recently published in the Journal of the American Veterinary Medical
Association, explains why BSL has consistently failed to reduce dog bites. The authors, Gary J. Patronek,
VMD, PhD, and Amy Marder, VMD, CAAB, of the Center for Shelter Dogs, Animal Rescue League of
Boston; and Margaret Slater, DVM, PhD, of the ASPCA, have applied one of the most valuable and wellrecognized tools of evidence-based medicine to this question.
Number needed to treat (called NNT) measures the effectiveness of new medicines or treatments. It
asks the question: How many patients have to take the medicine or get the treatment in order for one
patient to avoid a bad outcome? The fewer patients that have to be treated in order to avoid a bad
outcome, the more effective scientists consider a medicine or treatment to be.
But what if we had to treat thousands of patients to avoid even one bad outcome? Would we bother
with a new medicine if the number of people we needed to treat to prevent one bad outcome, was
10,000? If we could only identify 9,900 people suffering from the disease, we could not treat enough
people with the new medicine to be sure that even one of them would avoid the dreaded symptom.
This is precisely the result that Patronek and his colleagues obtained when they applied this evidencebased method to estimating how many dogs a community would have to ban to prevent a single,
serious dog bite. They called their mystery number the number needed to ban (NNB). Using dog bite
injury data from the Centers for Disease Control, the State of Colorado, and other, smaller jurisdictions,
along with guestimates of the population of various breeds or kinds of dogs, the authors calculated the
absurdly large numbers of dogs of targeted breeds who would have to be completely removed from a
community, in order to prevent even one serious dog bite. For example, in order to prevent a single
hospitalization resulting from a dog bite, the authors calculate that a city or town would have to ban
more than 100,000 dogs of a targeted breed.
To prevent a second hospitalization, double that number.
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Dog bite-related fatalities are so extremely rare that not even a state could ban enough dogs to insure
that they had prevented even one. (Consider: in Denver, Colorado, after they banned “pit bull” dogs in
1989, they had another dog bite-related fatality in the Denver area, involving another type of dog.)
Spain, Italy, Great Britain and the Netherlands have all reported that their breed specific regulations
have not produced a reduction in dog bite incidents. The Toronto Humane Society surveyed health
departments throughout the province of Ontario, and reported that the breed ban enacted in 2005 had
not produced a reduction in dog bites. In Winnipeg, Manitoba, after the city banned one type of dog,
dog bites actually rose, just involving other types of dogs. Reports from Denver, Colorado, Miami-Dade,
Florida, Prince George’s County, Maryland, and Omaha, Nebraska all tell the same story.
While there is no scientific evidence that one kind of dog is more likely to injure a person than another
kind of dog and BSL’s documented record is one of ineffectiveness, BSL remains a policy that some find
attractive. Patronek, Marder and Slater explain why.
“It is our belief,” they write in their conclusion, “that BSL is based largely on fear, and it has been
emphasized that appeals to fear have their greatest influence when coupled with messages about the
high efficacy of the proposed fear-based solution.”
The documented failures of BSL, now combined with the NNB analysis, can be marshaled to undermine
such fear-based appeals. BSL proponents will be unable to show “high efficacy of the fear-based
solution” or that BSL is rationally related to the public safety issues communities are typically attempting
to address when implementing BSL.
The complete article can be purchased from the Journal of American Veterinary Medical Association at
http://avmajournals.avma.org/doi/full/10.2460/javma.237.7.788
i
Patronek, G., Slater, M., Marder, A., “Use of a number-need-to-ban calculation to illustrate limitations of breedspecific legislation in decreasing the risk of dog bite-related injury,” JAVMA, vol 237, Number 7, October 1, 2010
www.nationalcanineresearchcouncil.com
Literature Review on the Welfare Implications of
The Role of Breed in Dog Bite
Risk and Prevention
(February 6, 2015)
_________
BREEDS IMPLICATED IN SERIOUS BITE INJURIES
In a range of studies, the breeds found to frequently appear in lists of dogs implicated in biting incidents
were German Shepherd Dog,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,55 mixed breed,1,4,6,8,10,11,12,19,17,20,55 pit bull-type
dogs,5,9,13,16,21,20,22,23,24,25,26,27 Rottweiler,15, 18,23,25, 26,28 Jack Russell Terrier,22,28,27 and others (Chow Chow,7,24
Spaniel,14,29 Collie,3,29 Saint Bernard,21 and Labrador Retriever2). If only the cases that resulted in very
severe injuries or fatalities21,23 are considered, pit bull-type dogs are more frequently identified. This may
relate to the popularity of the breed in the victim’s community, reporting biases, misidentification, and
the dog’s treatment by its owner (e.g., use as fighting dogs21). It is worth noting that fatal dog attacks in
some areas of Canada are attributed mainly to “sled dogs” and Siberian Huskies,57 presumably due to the
regional prevalence of these breeds. See Table 1 for a summary of breed data related to bite injuries.
CONTROLLED STUDIES
The prevalence of particular dog breeds can also change rapidly over time, often influenced by distinct
peaks of popularity for specific breeds. It seems that increased popularity is sometimes followed by
increases in bite reports in some large breeds. For example there was a distinct peak in American
Kennel Club registration of Rottweilers30 between 1990 and 1995, and they emerged at the top of the list
of ‘biting breeds’ for the first time in studies of bites causing hospitalization in the late 1990s and early
2000s.25,28,15,59 While it must be noted that other temporarily popular breeds such as Dalmatians and Irish
setters do not seem to make similar appearances, any estimate of breed-based risk must take into
account the prevalence of the breed in the population at the time and place of serious biting events.17,31
For example, researchers can compare well-documented bite cases with dogs living in similar
(matched control) households. Using this method, one study found that the breeds disproportionately
involved in bite injuries requiring medical attention in the Denver area (where pit bull types are not
permitted) were the German Shepherd Dog and Chow Chow.65
This peer-reviewed summary has been prepared by the American Veterinary Medical Association Animal Welfare Division.
While principally a review of the scientific literature, it may also include information gleaned from proprietary data, legislative
and regulatory review, market conditions, and scholarly ethical assessments. It is provided as information and its contents
should not be construed as official AVMA policy. Mention of trade names, products, commercial practices or organizations
does not imply endorsement by the American Veterinary Medical Association.
© American Veterinary Medical Association
Page 1 of 8
Other studies use estimates of breed prevalence that do not relate specifically to the households
where the bites occurred, such as general community surveys, breed registries, dog license databases or
animal shelter populations (See Table 2.). A study in Rome, Italy where molloser dogs like the Mastiff are
reputed to be the most dangerous dogs, found they were not disproportionately involved in biting
incidents when taking into account their prevalence in the community. 32 These prevalence referenced
studies attribute somewhat higher risk to a range of breeds including the German Shepherd Dog and
crosses61,62,63,64,65, and various other breeds (mixed breed,63,64 Cocker Spaniel,62,66 Chow Chow,65,66 Collie,62
Doberman,61 Lhasa Apso,44,66 Rottweiler,50 Springer Spaniel,43 Shih Tsu,43 and Poodle63).
AGGRESSIVE BREEDS
Breeds found to be more aggressive toward people based on behavioral assessments and owner surveys
includes tend to belong to small- to medium-sized breeds such as the collies, toy breeds and
spaniels.33,34,35,36,37 One survey of general veterinary clientele in Canada (specifically practices in New
Brunswick, Novia Scotia, and Prince Edward Island) identified Lhasa Apso, Springer Spaniel and Shih
Tsu as more likely to bite.43
When dogs of small stature show aggression aggressive their relatively limited strength means
they are less likely to inflict serious bite injury except on vulnerable individuals or as part of a group of
dogs.38,39 Referrals for aggression problems more closely approximate the breeds implicated in serious
bites , possibly because owners are more likely to seek treatment for aggression in dogs that are large
enough to do serious damage or pose a significant risk of injury. Larger dogs (regardless of breed) are
implicated in more publically reported injuries caused to humans40 and other dogs.41
Certain large breeds are notably under-represented in bite statistics such as large hounds and
retrievers (e.g., Labrador Retrievers, Golden Retrievers)35,43—although these breeds may have aggressive
subtypes.42 Results relating to German Shepherd Dogs are mixed,36,43 suggesting there unidentified
factors are causing variation in outcomes.
PIT BULL TYPES
Owners of dogs that are identified by the community as ‘pit bull type’ may experience a strong breed
stigma,44 however controlled studies have not identified this breed group as disproportionately
dangerous. The pit bull type is particularly ambiguous as a “breed” encompassing a range of pedigree
breeds, informal types and appearances that cannot be reliably identified.45 Visual determination of dog
breed is known to be unreliable.46 As discussed witnesses may be predisposed to assume that a dog that
bites is a ‘pit bull’.
Page 2 of 8
The incidence of ‘pit bull-type’ dogs’ involvement in severe or fatal attacks may be associated
with prevalence of at-risk dogs in neighborhoods with lots of young children. Owners of stigmatized
breeds are more likely to have involvement in criminal and/or violent acts47, so apparent ‘breed
correlations’ may be due to patterns in owner behavior.
BREED BANS
Most serious dog bite injuries (defined as requiring hospital treatment) in the United States involve
victims who are young children,55 un-neutered dogs, and dogs familiar to the victim (belonging to the
family, a family friend or neighbor).32,48,49,55 Accordingly, responsible ownership and supervision is key to
minimizing the risk of dog bites in communities.
Limiting ownership of specific breeds has been suggested by some to reduce injuries (e.g., pit
bull type,50 German Shepherd Dog51) however there is no evidence that breed-specific bans reduce the
rate or severity of bite injuries the community.8,52,53 Strategies known decrease the number of dog bites
include active enforcement of dog control ordinances.54
CONCLUSION
Dogs who bite can seriously injure or kill people48. It is natural for those affectedto seek to address
what they perceive to be the immediate cause, and it is easy to blame breed. However as Duffy et al
(2008) wrote of their survey based data: “The substantial within-breed variation…suggests that it is inappropriate
to make predictions about a given dog’s propensity for aggressive behavior based solely on its breed.”34 Factors relating
to the individual animal (eg, training method, sex and neutering status), the target (e.g. owner versus
stranger), and the context in which the dog is kept (e.g. urban versus rural) have been shown to be more
predictive of dogs bites than has breed. Also the nature of a breed has been shown to vary across time,
geographically, and according to breed subtypes such as those raised for conformation showing versus
field trials.37
Breed is a poor sole predictor of dog bites. Controlled studies reveal no increased risk for the
group blamed most often for dog bites, ‘pit bull-type’ dogs. Accordingly, targeting this breed or any
another as a basis for dog bite prevention is unfounded. As stated by the National Animal Control
Association: “Dangerous and/or vicious animals should be labeled as such as a result of their actions or behavior and
not because of their breed.”
SUMMARY TABLES
Table One
Studies of Serious Dog Bite Injury by Breed
Page 3 of 8
Period
Data Source
N
Country
Top Two Breeds Identified Ref
1971
US Dept. Health
843
United States (VA) mixed breed
1
German Shepherd Dog
1971-1974 Hospital records
50
South Africa
German Shepherd Dog
2
Labrador Retriever
1973-1976 US Dept. Health
2618 United States (AL) German Shepherd Dog
3
Collie
1979-1982 Health Dept. Severe attacks
16
United States (SC) pit bull type
21
Saint Bernard
1981-1983 US Reservations
772
United States
mixed breed
19
unspecified pedigree
1982
Hospital Records
420
Canada
German Shepherd
55
mixed breed
1982-1989 Hospital records
146
United Kingdom
pit bull type
22
Jack Russell Terrier
1987-1988 HASS
487
United Kingdom
mixed breed
4
German Shepherd Dog
1979-1998 Fatalities
27
United States
pitt bull type
23
Rottweiler
1969-2007 Fatalities
5
New Zealand
pitt bull type
56
-1989
Hospital records
168
United States
German Shepherd Dog
5
pit bull type
1989
Hospital records
75
United Kingdom
German Shepherd Dog
6
mixed breed
1991
Animal control records
357
United States
German Shepherd Dog
7
Chow Chow
1991+1994 Hospital records
198
United Kingdom
German Shepherd Dog
8
mixed breed
1989-1996 Hospital records
1109 United States (CA) pit bull type
9
German shepherd
1990-2007 Fatalities
28
Canada
mixed breed husky
57
“sled dog”
1995
Patients receiving rabies post-exposure ~8000 United States (PA) German Shepherd Dog
prophylaxis
mixed breed
1991-2000 Hospital records
654
Spain
German Shepherd Dog
10
11
mixed breed
1996
Hospital records
1916 Australia
German Shepherd Dog
58
Bull Terrier
1995-1997 Animal control
?
United States
Page 4 of 8
pit bull type
24
Chow Chow
1997
Hospital records
385
Canada
German Shepherd Dog
11
Cocker Spaniel
1998-2002 Hospital records
72
Canada
Rottweiler
59
German Shepherd Dog
2002
Accident compensation claims
535
New Zealand
Mixed breed
17
German shepherd dog
1991-2004 Hospital records
25
South Africa
pit bull type
60
German Shepherd Dog
1994-2005 Hospital records
341
Austria
mixed breed
12
German Shepherd Dog
1997-2003 Hospital records
11
United States
Rottweiler
15
German Shepherd Dog
2001-2002 ACC claims
3020 New Zealand
German Shepherd Dog
13
pit bull type
2000-2004 Hospital records
593
United Kingdom
Rottweiler
28
Jack Russell Terrier
2001-2005 Hospital records
551
United States
pit bull type
25
Rottweiler
2002-2005 Veterinary referral
111
United States (PA) Springer Spaniel
14
German Shepherd Dog
2004-2005 Survey based on Dog Bite Line contacts 234
Ireland
Collie
29
Spaniel
2001-2011 Hospital records
436
United Kingdom
Staffordshire Bull Terrier
27
Jack Russell Terrier
2000-2012 Hospital records
431
Switzerland
German Shepherd Dog
18
Rottweiller
2005-2009 Hospital records
40
United States (SC) Pit bull type
26
Rottweiler
2006-2009 Hospital records
203
United States (PA) Mixed breed
20
Pit bull type
Table Two
Studies of Serious Dog Bite Injury by Breed taking into Account Breed Prevalence
Period
Data Source
Prevalence estimate
N
Country
19741975
Animal control
Licensed dogs
?
United States
(MD)
19761977
US Bases
Relative risk versus
mixed breed
529 United States
(IL, MO)
1982
Pediatric practice
Non-biting pets of
194 United States
Page 5 of 8
Breeds Identified as Higher
Risk
German Shepherd Dog and
shepherd crosses
Doberman Pinscher
Collie
German Shepherd Dog
Cocker Spaniel
German Shepherd Dog
Ref
61
62
63
other patients
(MO)
19861987
1991
Health Unit
Licensed dogs
318 Canada
Plastic surgery cases
146 Australia
1991
Animal control
Prevalence in
community
Case controls
19901993
Hospital records
Survey
1993
Shelter animals quarantined General shelter
for biting
admissions
1996
Owner self-report (biters)
178 United States
(CO)
356 Australia
170 United States
(WI)
Owner self-report (non- 3226 Canada
biters)
2003-
Shelter and Veterinary
2004
Hospital records
Registered dogs
290 Italy
and shepherd crosses
mixed breed over 30lb
Poodle
German Shepherd Dog
mixed breed
German Shepherd Dog
German Shepherd Dog
Chow Chow
Doberman Pinscher
German Shepherd Dog
Rottweiler
Chow Chow
Cocker Spaniel
Lhasa Apso
Lhasa Apso
Springer Spaniel
Shih Tsu
Shepherd breeds
64
51
65
50
66
43
32
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59
Page 8 of 8
by Jane Berkey
dog breed specific
legislation
The cost to people, pets and
veterinarians, and the damage to the human-animal bond.
Veterinarians, their clients, and their clients’ pets in 300 cities and towns in the United States live with
special burdens and added costs because of ordinances banning or restricting dogs of one or more breeds
and breed mixes. Thirty-six breeds of dogs and mixes of those breeds have been restricted, in various
combinations and groupings. These restrictions and bans compromise the human-animal bond and complicate the professional landscape for veterinarians.
AVMA, the CDC, the National Animal Control Association, the Association
of Pet Dog Trainers, and virtually all animal welfare charities oppose breedspecific regulation.1 AVMA PLIT recently released a statement opposing
breed discrimination by insurers.
There has never been any evidence that breed bans or restrictions contribute
“There has
never been any
evidence that
breed bans or
restrictions
to improved public safety. The Netherlands repealed its breed ban last year
because, based upon a report from a committee of experts, the ban had not
led to any decrease in dog bites.2 Italy repealed its breed-specific regulations
in April of this year.3
DEMONIZED DOGS THEN
As America’s conflict over slavery intensified, public attitudes towards the
bloodhound paralleled the increasingly negative attitudes towards the dogs’
most publicized function: slave catching. The depiction of the slave catcher’s
dog in stage re-enactments of UNCLE TOM’S CABIN made him an object
of dread to ordinary citizens, and an object of attraction to dog owners who
wanted dogs for anti-social purposes. As these owners acquired more and
contribute to
more dogs, serious incidents – and fatalities – associated with dogs identified
as bloodhounds became prominent in the public press.4
improved
In the 20th century, other groups of dogs replaced the bloodhound as objects
of dread, most notably the German Shepherd (In 1925, a New York City
public safety.”
magistrate said they should be banned.5 Australia banned the importation
of German Shepherds from 1928 until 19736), the Doberman Pinscher
(frequently associated with soldiers of the Third Reich), and the Rottweiler
(portrayed as the guardian of Satan’s child in the popular 1976 film THE OMEN).
DEMONIZED DOGS NOW
Early in the 20th century, pit bull type dogs enjoyed an excellent popular
reputation. An American Bull Terrier had symbolized the United States on a
Published in Proceedings of Annual AVMA Convention,
July 11-14, 2009 Seattle
Washington
www.nationalcanineresearchcouncil.com
1
World War One propaganda poster. “Tighe”, a pit
1966 –1975, fewer than 2% of all dogs involved
bull type dog, had helped sell Buster Brown shoes.
in fatal attacks in the United States were identified
Pete the Pup, the “little rascals” pit bull pal of the
as of the breeds that figured prominently in the
Our Gang comedies, was the first AKC-registered
CDC study.4
Staffordshire Terrier (Registration number A-103929).
The CDC has since concluded that their singleIn 1976, the Federal government amended the
vector epidemiological approach did not “identify
Animal Welfare Act to make trafficking in dogs
specific breeds that are most likely to bite or kill,
for the purposes of dog fighting a crime. The media
and thus is not appropriate for policymaking deci-
focused on the dogs, rather than on the people
sions related to the topic.”1 AVMA has published
who fought the dogs; and the dogs made head-
a statement to the same effect.9
lines. Monster myths of super-canine powers
began to dominate the stories.7 As had happened
“Dog bite statistics are not statistics, and do not
to the bloodhound, the myths attracted the kind
give an accurate representation of dogs that bite.”10
of owners who use dogs for negative functions.
Nevertheless, the questionable data-set covering
Sensationalized, saturation news reporting of
only one particular 20-year period, and not the
researchers’ conclusions and recommen-
“Dog bite statistics are not statistics,
and do not give an accurate
dations, is repeatedly cited in legislative
forums, in the press, and in the courts
to justify breed discrimination. Dr. Gail
representation of dogs that bite.”10
Golab of the AVMA, one of the researchers involved in the CDC project, said,
“The whole point of our summary was
incidents involving dogs called pit bulls, linked them
to explain why you can’t do that. But the media
in the public mind almost exclusively with criminal
and the people who want to support their case just
activity. This small subset of dogs being used for
don’t look at that.”11
these negative purposes came to define the millions
The researchers had suspected that media coverage of “newsworthy” breeds could have resulted
in “differential ascertainment” of fatalities by breed
attribution. Relying on media archives, of the 327
fatalities identified within the 20-year period, the
researchers located breed or breed-mix identifications for 238, approximately 72% of the total.
More than 25 breeds of dogs were identified.8
of pit bull type dogs living companionably at home.
WRONG NUMBERS, NOT STATISTICS
The Centers for Disease Control (CDC) attempted to
identify the breeds of dogs involved in fatal human
attacks.8 The study period, 1979 –1998, happened
to coincide with the sensationalized media portrayal
and resulting notoriety of pit bulls and Rottweilers.4,7
Subsequently, Karen Delise of the National Canine
Of those incidents for which the researchers could
find no breed attributions (n = 89), Karen Delise of
the National Canine Research Council later located
breed attributions in 40; and 37 of these cases
involved dogs identified as other than Rottweiler
and pit bull, a result that confirmed the researchers
concerns regarding ”differential ascertainment” of
Research Council reported that, in the decade
incidents because of breed bias.12
In reporting their findings, the researchers made
clear that the breeds of dogs said to be involved
in human fatalities had varied over time, pointing
out that the period 1975 –1980 showed a different distribution of breeds than the later years.8
2
www.nationalcanineresearchcouncil.com
In addition to the problem of the small, unrepresen-
identifications of dogs by adoption agency person-
tative, and incomplete data sets, the researchers
nel and the breeds identified in the same dogs
expressed concern about the reliability of the breed
through DNA analysis. Of 16 mixed breed dogs
identifications they had obtained, and were uncer-
labeled as being partly a specified breed, in only
tain how to count attacks involving “cross bred”
25% of these dogs was that breed also detected
dogs.8
by DNA analysis.15
It is estimated that at least one-half of the dogs in
THE LANDSCAPE OF BREED SPECIFIC
the United States are mixed breed dogs.13 What is
LEGISLATION
the reliability or significance of a visual breed identi-
Legislative restrictions range from an outright ban in
fication of a dog of unknown history and genetics?
Denver, Colorado, where, since 1989, thousands of
dogs have been seized and killed16; to a regulatory
Pit bull is not a breed, but describes a group of
catalog of muzzling, neutering, and confinement
dogs that includes American Staffordshire Terriers,
mandates that only apply to the regulated group,
Staffordshire Bull Terriers, American Pit Bull Terriers,
however defined; and to requirements that owners
an increasing number of other pure breeds, and an
pay special license fees and maintain higher levels
ever-increasing group of dogs that are presumed,
of liability insurance. Apart from statutory require-
on the basis of appearance, to be mixes of one
ments, some homeowners’ insurers are imposing
or more of those breeds. Ordinances restricting or
special requirements before they will include
banning dogs generally rely on someone’s visual
liability coverage for dogs of certain breeds, or are
assessment of their physical characteristics.
declining to cover dogs of an increasing number
The modern science of genetics renders a breed label based on visual
identification problematic. According
to Sue DeNise, vice-president of MMI
Genomics, creators the Canine Heritage
“Breed identification of a mixed breed dog
based on its phenotype is unscientific, and
is likely to be contradicted by a DNA test.”
Breed Test for mixed breed dogs, each
test result is furnished to the dog owner with the
of breeds altogether. Rental apartments, planned
following proviso: “Your dog’s visual appearance
communities, campgrounds, and neighborhood
may vary from the listed breed(s) due to the inher-
associations impose a wide range of special rules
ent randomness of phenotypic expression in every
or restrictions regarding many breeds of dogs.
individual.”14
In a jurisdiction with breed-specific regulations,
Scott and Fuller, in their landmark genetic studies,
veterinarians can easily be drawn into an official
produced offspring of considerable phenotypic
controversy. When a police officer in Maquoketa,
variety from purebred and F1 crosses.
Iowa identified a dog as a pit bull and served notice
on the owner that she had to remove it from the
Breed identification of a mixed breed dog based on
town, the owner appealed to the state Office of
its phenotype is unscientific, and is likely to be con-
Citizen’s Aide/Ombudsman. The 21-page report
tradicted by a DNA test. A study to be published
that resulted, chronicles the failure to arrive at
in the Journal of Applied Animal Welfare Science
an agreed-upon breed identification for the dog.
points to a substantial discrepancy between visual
Among other documents, the owner produced
3
www.nationalcanineresearchcouncil.com
described the dog as a “pit mix”.17
Focusing on breed or phenotype diverts attention from strategies veterinarians and other animal
experts have consistently identified as contributing
to humane and safer communities.
In January, 2009, the U.S. Department of the Army
BREED LABELING AND VETERINARY PRACTICE
banned Chows, Rottweilers, pit bulls, wolf hybrids
In an environment of breed discrimination, the
breed identification of a dog can have serious
consequences with municipal authorities, animal
shelters, landlords, and insurers, all of which will
compromise the bond between a family and their
dogs. Ordinances may obligate owners with expensive special housing and containment requirements.
Owners may even be forced to choose between
sending a beloved family pet away, or surrendering
it to be killed.
vaccination certificates from her veterinarian that
described the dog as a “Rott-mix.” The town countered with another veterinarian’s intake form that
and Doberman Pinschers from all privatized military housing. The previous July, Fort Hood, Texas
banned pit bulls and pit bull mixes from government
housing. The Fort Hood mission support order
specifies that, in the event of a dispute, “the Fort
Hood Veterinary Clinic [emphasis mine] will be the
deciding authority to determine if a dog is a Pit Bull
[sic] cross.”18
HUMANE COMMUNITIES ARE SAFER
Veterinarians who attempt to visually identify the
breeds that might make up a dog do not derive any
benefit from this activity, while the client may hold
the veterinarians to the same professional standard
as they would with respect to the delivery of medical services.
COMMUNITIES
In “A Community Approach to Dog bite Prevention,”
the AVMA Task Force reported, “An often asked
question is what breed or breeds of dogs are ‘most
dangerous’? This inquiry can be prompted by a
serious attack by a specific dog, or it may be the
It is impossible to breed label dogs of unknown
origin and genetics solely on the basis of their
appearance. There is so much behavioral variability
within each breed, and even more within breed
result of media-driven portrayals of a specific breed
as ‘dangerous.’ . . . singling out 1 or 2 breeds for
control . . . ignores the true scope of the problem
and will not result in a responsible approach to
mixes, that we cannot reliably predict a dog’s
behavior or suitability based on breed alone. Each
dog is an individual.19 Owners may be influenced as
protecting a community’s citizens.”10 Delise, based
upon her study of fatal attacks over the past five
decades, has identified poor ownership/manage-
to what behavior to expect from their dog, based
upon breed stereotypes.20 Veterinarians must take
the lead, and free themselves from stereotypes,
in order to better serve their clients, their clients’
animals, and society.
ment practices involved in the overwhelming
majority of these incidents: owners obtaining dogs,
and maintaining them as resident dogs outside of
the household for purposes other than as family
pets (i.e. guarding/ protection, fighting, intimidation/
status); owners failing to humanely contain, control
and maintain their dogs (chained dogs, loose roaming dogs, cases of abuse/neglect); owners failing to
Jane Berkey, President
knowledgeably supervise interaction between chil-
Animal Farm Foundation, Inc.
dren and dogs; and owners failing to spay or neuter
resident dogs not used for competition, show, or in
a responsible breeding program.4
4
www.nationalcanineresearchcouncil.com
References
1 http://www.cdc.gov/HomeandRecreationalSafety/Dog-Bites/dogbite-factsheet.html;
http://www.avma.org/issues/policy/dangerous_animal_legislation.asp;
http://www.nacanet.org/poldanger.html;
http://www.apdt.com/about/ps/breed_specific_legis.aspx.
2 Associated Press, “Dutch government to lift 25-year ban on pit bulls,” June 10, 2008
3 ANSA, “Italy Scraps Dangerous dog Blacklist,” March 3, 2009
4K
. Delise, The Pit Bull Placebo: The Media, Myths, and Politics of Canine Aggression, Anubis Publishing, Ramsey,
New Jersey, 2007
5 New York Times, January 1, 1925
6 German Shepherd Dog Club of South Australia, “History of the Breed,” http://gsdcsa.org.au/breedhistory.htm.
7N
ew York Times, ‘Sport’ Pitting Dog Against Dog Is Reported Spreading Secretly,’ December 10, 1978;
E.M. Swift,“The Pit Bull: Friend and Killer,” Sports Illustrated, July 27, 1987;D. Brand, “Time Bomb on legs,”
Time Magazine July 27, 1987
8J
. Sacks, L. Sinclair, G. Golab, et al, “Breeds of dogs involved in fatal human attacks in the United States between
1979 and 1998,” JAVMA, Vol 217, No. 6, Sept 15, 2000.
9 AVMA, “To Whom It May Concern,” open letter, copy furnished upon request
10 B
. Beaver, et al, “A community approach to dog bite prevention: American Veterinary Medical Association Task
Force on Canine Aggression and Human-Canine Interactions,” JAVMA, Vol 218, No. 11, June 11, 2001
11 Golab quoted in “Dangerous Breeds?”, Best Friends Magazine, Sept/Oct 2004, p 14
12 h
ttp://nationalcanineresearchcouncil.com/dog-bites/dog-bite-studies/wrong-numbers-notstats/; G. Patronek,
S. Slavinski, “Zoonosis Update: Animal Bites,” JAVMA, VOL 234, No. 3, February 1, 2009.
13 B
. Beaver, “In Opposition to the Ontario Law,” affidavit submitted in Cochrane v In Right of Ontario,
Ontario Superior Court of Justice, Court File No. 05-CV-295948PDI
14 Quoted in J. Brackman, “Can DNA Decipher the Mix?” The Bark, Issue #50, Sep/Oct 2008
15 V
. Voith, E. Ingram, K Mitsouras, et al, “Comparison of Adoption Agency Identification and DNA Breed Identification
of Dogs,” Journal of Applied Animal Welfare Science, In Press July 2009
16 K
. Delise, “Denver: Selective Counting and the Cost to Dogs and People, Animal Law Coalition,
http://www.animallawcoalition.com/breed-bans/article/648
17 Investigative Report State of Iowa Citizens’ Aide/Ombudsman, “Investigation of Maquoketa’s Pit Bull Ban Ordinance
and Enforcement,” Case File 0603634, December 21, 2006.
18 HQ, III Corps & Fort Hood Fort Hood, TX 76544 041229LAug 08, MISSION SUPPORT ORDER PC 08-07-269
19 A
. Marder and B. Clifford, “Breed Labeling dogs of Unknown Origin,”
http://nationalcanineresearchcouncil.com/wp-content/uploads/2008/10/breedlabelingncrc.pdf
20 D
uffy, D.L. et al, “Breed differences in canine aggression,” Appl. Anim. Behav. Sci, (2008)
doi: 10.1016jf.applamin.2008.04.006; S. Gosling, et al, “A Dog’s Got Personality: A Cross Species Comparative
Approach to Personality Judgments in Dogs and Humans,” Journal of Personality and Social Psychology, 2003,
Vol. 85, No.6, 1161-1169
5
www.nationalcanineresearchcouncil.com
by Victoria L Voith PhD, DVM, DACVB
a comparison of visual and dna
identification of breeds of dogs
We are all aware of the newspaper articles, magazine stories, and TV segments that show pictures of dogs
and then reveal DNA breed analyses of the dogs. Surprise – the DNA results are not what were expected
based on the appearance of the dogs or the owners’ beliefs. Those of us who walk through shelters and
animal control facilities compare the posted breed descriptions of the dogs to what they look like to us –
with frequent differences of opinions. Those who have worked at shelters and similar facilities are aware
that as dogs move through the steps in admission or during their stay that their breed descriptions may
change. It is my impression, when visiting animal control or adoption agencies, that most medium to large
size dogs with straight, short/ medium length brown hair coats are cast as German shepherds or shepherd
mixes, dogs with a black spot on their tongues are designated Chow mixes,
and most medium sized, stocky, broad headed, small eared dogs with a
short hair coats are pitbulls or pit-bull mixes.
“the DNA results
are not what
were expected
based on the
appearance of
the dogs or the
owners’ beliefs.”
It is not easy to visually identify the breeds of dogs of unknown parentage
accurately. Sometimes dogs just don’t look like either parent. Scott and
Fuller’s work on the genetics and social behavior of dogs involved studying purebred dogs, F1 crosses of purebreds, backcrosses and F2 crosses.1
Photographs of some of these F1 and F2 puppies depict that they do not
resemble either purebred parent, nor do the photographs of the F2 generations dogs look like their mixed breed parents. We don’t know how many
of the offspring did look like their purebred ancestors, but clearly not all
resembled parents or grandparents.
Shelter dog breed assignments may be based on what the dogs look like
to someone at the shelter or because owners relinquishing their dogs have
identified the dogs as a specific breed. Newborn and young puppies may be
identified as a certain breed because the mother dog resembled a purebred
dog. In the latter case, the sire of the litter could have been any breed or
several dogs could have fathered puppies in the same litter. When the puppies grow up they don’t look anything like their mother or litter mates. These
breed or mixed breed identifications may eventually find their way into data
bases – be it through population data, dog bites, serious dog attacks, behavior problems, or disease statistics.
Rarely are owners permitted to simply fill out forms that ask about the breed
by only stating that the dog is a mixed breed or of unknown parentage. If
they do so, the follow-up question often is “What is it mostly?”, or “What
is its most predominant breed?”, or “What does it look like mostly?” This
information may be solicited by insurance companies, landlords, housing
associations, licensing agencies, mandatory dog bite reports, veterinary
Published in Proceedings of Annual AVMA Convention,
July 11-14, 2009 Seattle
Washington
www.nationalcanineresearchcouncil.com
1
medical records, the media, and researchers tryReports of DNA analyses of percentages of pureing to determine the likelihood of involvement of
bred dog breed ancestry, while accurate most of
specific breeds in study populations. For example,
the time, are not infallible. The laboratories proin the methodology of one elegantly designed study,
viding such analyses may have qualifiers in their
owners were asked “what breed they considered
reports stating that there is an 85% or 90% validity
their dog: if more than one breed was specified,
of the results and indicate which results have lower
they were asked which breed they considered to
confidence levels. Different testing laboratories
be predominant.”2 This
may report different
article became part of
results depending on
“The
discrepancy
between
breed
the impetus for many
which dogs were used
recommendations and
to develop their stanidentifications based on opinion and
restrictions intended to
dards and how the
reduce dog bites.
laboratories analyze the
DNA analysis, as well as concerns
samples.8 As the tests
High profile articles
about reliability of data collected
are refined, the same
in JAMA and JAVMA
laboratory may report
based
on
media
reports,
draws
have reported dog bite
slightly different results
fatalities and listed
at different points in
into
question
the
validity
and
breeds involved in such
time.
3,4
attacks. The data
enforcement of public and private
used was obtained by
The discrepancy
“combining data from
between breed idenpolicies pertaining to dog breeds.”
the National Center
tifications based on
for Health Statistics
opinion and DNA
and computerized searching of news stories. Karen
analysis, as well as concerns about reliability of
Delise has presented compelling arguments in her
data collected based on media reports, draws into
recent book, The Pit Bull Placebo, that undermines
question the validity and enforcement of public and
5,6
conclusions and implications of these reports.
private policies pertaining to dog breeds.
A short report in press in the Journal of Applied
Animal Welfare Science indicates low agreement
between the identification of breeds of dogs by
adoption agencies and DNA identification.7 The
dogs in this study were of unknown parentage and
had been acquired from adoption agencies. In only
a quarter of these dogs was at least one of the
breeds proposed by the adoption agencies also
detected as a predominant breed by DNA analysis.
(Predominant breeds were defined as those comprised of the highest percentage of a DNA breed
make-up.) In 87.5% of the adopted dogs, breeds
were identified by DNA analyses that were not
proposed by the adoption agencies. A breed must
have been detected at a minimum of 12.5% of a
dog’s make-up to be reported in the DNA analysis.
Dr. Amy Marder, Animal Rescue League of Boston
and Director for the Center for Shelter Dogs, has
proposed that dogs adopted from shelters in the
U.S. simply be identified as “American Shelter
Dogs”. This might solve a lot of problems, as well
as promote pride and ownership of an “American
Shelter Dog.”
Victoria Lea Voith
PhD, DVM, DACVB
Professor, Animal Behavior,
Western University
2
www.nationalcanineresearchcouncil.com
References
1. J
P Scott, J L Fuller, (1965). Genetics and the Social Behavior of the Dog. The University of Chicago
Press.
2. K
A Gershman , J J Sacks, J C Wright J.C.( 1994). Which Dogs Bite? A Case-Control Study of Risk
Factors. Pediatrics, 93, 913-916
3. J
J Sacks, R W Sattin,, S E , Bonzo, 1989). Dog-Bite related Fatalities from 1979 through 1988. JAMA.
262, 1489-1492.
4. J
J Sacks, L Sinclair,, J Gilchrist, et al (2000). Breeds of dogs involved in fatal human attacks in the
United States between 1979 and 1998. JAVMA, 217, 836-840.
5. K
. Delise, The Pit Bull Placebo: The Media, Myths, and Politics of Canine Aggression, Anubis Publishing,
Ramsey, New Jersey, 2007
6. J
R Berkey, DOG BREED SPECIFIC LEGISLATION: THE COST TO PEOPLE, PETS AND VETERINARIANS,
AND THE DAMAGE TO THE HUMAN ANIMAL BOND, Proceedings of Annual AVMA Meeting, July 11-13,
2009, Seattle.
7. V
. Voith, E. Ingram, K Mitsouras, et al, “Comparison of Adoption Agency Identification and DNA Breed
Identification of Dogs, Journal of Applied Animal Welfare Science, July 2009.
8. M Kochan,( 2008, October). Can I see some I.D.? Dogfancy, 38-41
3
www.nationalcanineresearchcouncil.com
Breed Specific
Or Looks Specific
The term “pit bull characteristics” and “all three bully breeds” are used as descriptions of the dogs
that the breed-specific laws would apply to. However, I’m not sure what a “pit bull characteristic” is
because the term pit bull does not refer to any specific breed of dog. It is ironic that legislation
containing the words “breed” and “specific” define “the specific breed” as a nebulous group of
three or more distinct breeds along with any other dog that might be
“I am beginning to
mixed with those breeds. It is my professional opinion that this
group of dogs must be the most genetically diverse dog breed on
believe that breed
the planet. I find it paradoxical that the consensus medical and
specific legislation
genetic view is that even one single letter difference between two
targets nothing more
than a small subset
of morphological
characteristics of
dogs and does not
address behavior at
all.”
people’s DNA can result in dramatic differences in behavior,
susceptibility to disease and risk of adverse drug reactions, but,
when it comes to man’s best friend, the exact opposite argument is
made. I think these attempts to “protect society” from dangerous
dogs are flawed because the inherent assumption in these laws is
that anatomical and morphological characteristics in dogs correlate
with certain behaviors. The genetic program that results in a large
thick skull, like that of a Labrador Retriever, is not the same genetic
program that builds the brain. The former regulates genes that
control the cellular differentiation and anatomical patterning of
cartilage, muscle and bone. The latter regulates completely
different processes including the highly ordered growth of millions
of different neurons that migrate and interconnect to form neuronal
circuits that communicate the biochemical language of the brain.
The “science” of inferring cognitive and behavioral traits from
physical properties of the head and skull (called phrenology) had
Kristopher Irizarry, PhD
Assistant Professor,
Bioinformatics, Genetics,
Genomics, Western University.
Advisor to NCRC
been discredited in the last century (20th century). Why we would
allow laws based on phrenology to be enacted in the 21st century is
a question worth investigating.
www.nationalcanineresearchcouncil.com
How long before we discard visual
breed identification?
A new survey confirms that even dog experts
can’t tell just by looking.
In the 1960’s, John Paul Scott and John L. Fuller showed that mixed breed dogs may bear little or
no resemblance to their purebred ancestors.1 In 2009, Dr. Victoria Voith and colleagues from
Western University published a short report indicating a low agreement between the identification
of breeds of dogs by adoption agencies and DNA identification of the same dogs.2
The Maddie’s® Shelter Medicine Program at the University of Florida’s College of Veterinary
Medicine has also been looking systematically into the problem of visual breed identification of
dogs of unknown origin. A survey conducted at four Florida animal shelters confirmed the unreliability of visual breed identification, thus calling into question yet again its use for dog adoption,
lost and found, and regulation.3
The Maddie’s® Shelter Medicine Program conducted a new and expanded survey during the
summer of 2012.4 An array of dog experts – breeders, trainers, groomers, veterinarians, shelter
staff, rescuers and others –offered their best guesses as to the breeds in the dogs in a series of
photographs. More than 5,000 completed the survey. Their visual assessments were then compared to DNA breed profiles of the dogs.
Each dog in the survey had at least 25% of a single breed in its DNA profile. A response was considered accurate if it named any of the breeds DNA analysis had detected in the dog, no matter
how many other breeds had been detected, and whether or not the breed guessed was a predominant breed in the dog, or only had been detected in a trace amount. Since, in almost every
dog multiple breeds had been detected, there were lots of opportunities to be correct.
(Pictures of the 100 dogs in the study, their actual DNA breed results, and what survey respondents guessed their breeds were are available at http://sheltermedicine.vetmed.ufl.edu/library/
research-studies/current-studies/dog-breeds/dna-results/.)
Given the findings of Scott and Fuller, Dr. Victoria Voith, and the earlier Maddie’s® Shelter Medicine Program survey, the results were unsurprising. The 5000+ responders were only correct –
that is, named at least one of the breeds detected by DNA analysis – less than one-third of the
time. And no profession did much better than any other. Every profession’s responses, in total,
were correct less than a third of the time.
www.nationalcanineresearchcouncil.com
In addition, from the variety of guesses associated with almost all of the dogs, it is clear that these
experts did not agree with each other when they looked at the same dog.
To date, we are not aware of any survey or controlled study that has returned a result different
from that obtained by Dr. Voith and the two surveys conducted by the University of Florida’s College of Veterinary Medicine. Nor do we expect to. These results corroborate the work that Scott
and Fuller published almost 50 years ago. They are in turn supported by the reports of geneticists
that a remarkably small amount of genetic material exerts a remarkably large effect on the size,
shape, etc. of a dog.5
These uncontroverted reports argue that it is long past time for dog experts to accept the inescapable limitations of visual breed identification of mixed breed dogs of unknown origin. One step in
the right direction is a new report by two veterinarians and an attorney that has appeared in the
Journal of the American Veterinary Medical Association. These authors recommend that veterinarians will better serve their clients and their clients’ pets if they describe these mixed-breed
dogs without assigning a breed, adopting a “single non-breed based term to describe all dogs of
unknown parentage.”6
One of the 100 dogs in the study, with corresponding DNA results and guesses of survey
respondents.
This sound advice for veterinarians is also applicable to animal sheltering, animal control, and
public policy. We have placed an entirely unwarranted confidence in shelter intake data, adoption
policy and practices, dog bite studies, bite reports and news accounts that either presume to predict a dog’s future behavior based on breed, or to relate incidents to breed. Visual breed identification did not only become inaccurate as a result of the surveys mentioned above, or even when
Scott and Fuller published Genetics and the Social Behavior of the Dog back in 1965. Rather,
these findings call our attention to what has always been the case.
2
www.nationalcanineresearchcouncil.com
What Dr. Voith pointed out to the American Veterinary Medical Association in 2009 bears repeating:
"The discrepancy between breed identifications based on opinion and
DNA analysis, as well as concerns about reliability of data collected based
on media reports, draws into question the validity and enforcement of public
and private policies pertaining to dog breeds."7
Updated November 7, 2012
SOURCES & NOTES
1. Scott, J. P., & Fuller, J. L. (1965). Genetics and the Social Behavior of the Dog. Chicago: Univ. of Chicago Press.
2. Voith, V., Ingram, E., Mitsouras, K., & Irizarry, K. (July 2009). Comparison of Adoption Agency Identification and DNA
Breed Identification of Dogs. Journal of Applied Animal Welfare Science. 12(3). 253-262.)
3. Olson, K. R., Levy, J.K, and Norby, B. (2012). [Poster] Pit Bull Identification in Animal Shelters. Maddie’s Shelter
Medicine Program at the University of Florida and Department of Large Animal Clinical Sciences at Michigan State University. Retrieved from http://www.maddiesfund.org/Resource_Library/Incorrect_Breed_Identification.html;
Levy, J.K. (2012). DNA and Survey Results: What Kind of a Dog Is That? Retrieved from http://
sheltermedicine.vetmed.ufl.edu/library/research-studies/current-studies/dog-breeds/dna-results/
4. This project was funded in part by a grant from the National Canine Research Council.
5. Boyko AR, Quignon P, Li L, Schoenebeck JJ, Degenhardt JD, et al. (2010) A Simple Genetic Architecture Underlies
Morphological Variation in Dogs. PLoS Biol 8(8): e1000451. doi:10.1371/journal.pbio.1000451
6. Simpson, R.J., Simpson, K.J., VanKavage, L. (November 2012). Rethinking Dog Breed Identification in Veterinary
Practice. Journal of the American Veterinary Medical Association, 241(9).
7. Voith, V. (2009). A Comparison of Visual and DNA Identification of Breeds of Dogs. Published in Proceedings of Annual AVMA Convention, July 11 – 14, 2009 Seattle Washington. Retrieved from http://
www.nationalcanineresearchcouncil.com/uploaded_files/tinymce/Voith%20AVMA.pdf
3
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BEYOND BREED
New Research on the Visual Identification of Breeds
Calls into Question Breed-Discriminatory Legislation
Something used to weigh on Dr. Victoria Voith’s mind nearly every time she visited a shelter.
She noticed a preponderance of dogs identified as German shepherds or as shepherd mixes. As
someone with a great fondness for the breed and someone who once had a German shepherd,
Voith was fairly certain that the shelters were, in many cases, misidentifying the dogs.
and opportun
ent
ity
pit bull” dogs
for “
ng equal tre
Securi
atm
“There’s so much
behavioral variability
within each breed,
even more between
breed mixes,
that we cannot
reliably predict
a dog’s behavior or
his suitability for a
particular adopter based
on breed.”
A N I M A L FA R M
FOUNDATION, INC.
SINCE 1985
www.animalfarmfoundation.org
Voith is a professor of veterinary medicine at Western
University in Pomona, California, and a specialist in the
animal/human relationship, so she became curious: Just
how often do people visually misidentify the breeds of
dogs? She decided to conduct a study that might give
her an answer.
In 2008 she randomly chose 20 different dogs who had
been adopted from 17 different shelters, rescue groups
and other adoption agencies that had attempted to
identify the dogs’ breeds. All of the 20 dogs had been
labeled as mixed breeds – either a mix of specific breeds
(e.g., German shepherd and Labrador) or breed types
(e.g., shepherd mix), or a combination of both (e.g.,
chow/terrier mix). Voith had the dogs’ DNA analyzed to
see how the agencies’ breed identifications matched up
to the genetic tests.
The DNA tests, which report breed compositions in
percentages, revealed multiple breeds in all but one of
the dogs, whose only DNA-identified breed was 12.5
percent Alaskan malamute. The highest percentage of
one breed found in any of the dogs was 50 percent,
and that too occurred in only one dog. Otherwise,
predominant breeds represented only 25 percent or 12.5
percent of the dogs’ genetic makeup. (The DNA reports
are in units of 12.5 percent to represent the approximate
percentage that each great-grandparent contributed to
the individual dog’s DNA.)
(continued on next page)
LEGISL ATION
By Ted Brewer Reprinted from Best Friends Magazine, March/April 2011
So, how did the adoption agencies’ identifications
match up with the DNA results? According to the
DNA, the agencies correctly identified a specific breed
in only 31 percent of the 20 dogs. Usually, the breeds
correctly identified by the agencies represented only
25 percent or 12.5 percent of the dogs’ makeup. “Even
when there was an agreement between a specific
adoption identification and DNA identification,
the same dogs usually had additional breeds identified
by DNA that were not suggested by the adoption
agencies,” Voith says.
Voith has expanded her breed identification research
to include more than 900 trainers, veterinarians, kennel
workers, animal control staff and other dog experts, all
tasked with visually identifying a sample of mixed-breed
dogs. Voith has compared their answers with the DNA
of these dogs. Though she can’t yet reveal what the
results are, she does say, “My ongoing studies indicate
there is often little correlation between how people
visually identify dogs and DNA-reported results.”
“So we have to go
from identifying dogs by breed to
identifying dogs as individuals.”
“You can even have agreement among professionals
on what they think this dog is, maybe as much as 70
percent of the people trying to identify the dog, and
the DNA doesn’t come out to match that,” she says.
“It’s not that people in these professions aren’t good
at identifying purebred dogs; it’s just that mixed-breed
dogs do not always look like their parents.”
Speaking or writing about her research, Voith often
refers to the research that John Paul Scott and John
L. Fuller conducted in the 1950s and 1960s on the
behavior and development of dogs, including the mixedbreed offspring of various purebred crosses.
Scott and Fuller photographed the offspring and many
of the dogs looked nothing like their parents or grandparents. Some, in fact, looked more like other breeds.
“It amazes me how dogs can look like a breed that
doesn’t appear in their immediate ancestry,” Voith says.
“Voith suspects that as many as
75 percent ofall mixed-breed dogs
may be mislabeled.”
Voith’s research triggers a slew of questions, among
them: If professionals can’t even correctly identify
breeds of dogs by sight, how can law enforcement in
cities where certain breeds are banned? Given how
hard it is to correctly identify breeds of dogs by sight,
do breed-discriminatory policies make sense – in whatever arena they exist? By claiming their dogs are the
offspring of certain breeds, with the characteristics
commonly associated with those breeds, are adoption
agencies inadvertently creating false expectations
among adopters of how those dogs might behave?
And is it time, finally, to stop viewing dogs through the
prism of their supposed breeds?
A CASE OF MISTAKEN IDENTITY
The propensity we have for wanting to know our dogs’
breeds and talk about it is perhaps as natural to us as
wanting to know our own ancestry and tell others
about it. It’s often a matter of pride that our dog has,
say, Newfoundland in him, just as it’s a matter of pride
that our grandparents or great-grandparents emigrated
from Italy, Russia, India or some other exotic location.
(continued on next page)
By Ted Brewer Reprinted from Best Friends Magazine, March/April 2011
But once person’s pride can be another person’s, or
city’s, bias, as we well know from places that have
banned pit bull-type dogs.
Ledy VanKavage, senior legislative attorney for Best
Friends, has taken note of Voith’s breed identification
research and cited it in support of an argument
presented last year in an article for the American Bar
Association’s The Public Lawyer. VanKavage says that
breed-discriminatory legislation is bad fiscal policy
based largely on erroneous data that pegs pit bull
terriers as the common culprit in dog bites. The data
is gleaned largely from the media.
in Toledo, Ohio, for instance, the Lucas County Dog
Warden’s Office seized from a Toledo man’s house
what animal control officials insisted were three pit bull
terriers, two more than the city allows for one owner.
Police also charged him with violating an ordinance that
mandates pit bull owners to keep a muzzle and leash
on their dogs when in public. The owner fought the
charges in court, proving that the dogs were, in fact,
cane corsos, not pit bulls. The judge ruled that the
dogs be released. (The judge also struck down the
provisions in the dog ordinance that limited the
number of pit bulls an owner may have and mandated
that pit bulls wear muzzles in public.)
“Not even all dogs in the same litter
of purebreds are identical.
There’s tremendous variation
in the behavior and the morphology
within a breed, even among
litter mates.”
Of course, even if the dogs had been pit bull terriers,
that doesn’t mean they were dangerous dogs simply by
virtue of their breed. “Not all dogs of the same breed
act the same,” Voith says. “Not even all dogs in the
same litter of purebreds are identical. There’s tremendous variation in the behavior and the morphology
within a breed, even among litter mates.”
“It’s sort of like an urban legend or hoax promulgated
by the media,” VanKavage says. “You can’t just go by
the headlines, because a lot of times they’re wrong.
A lot of times it’s law enforcement who’s giving
the media incorrect information. They’re wrongly
identifying the breed, because they think that any shorthaired muscular dog is a pit bull.”
Voith suspects that as many as 75 percent of all mixedbreed dogs may be mislabeled. “So the whole data
base on which these [breed] restrictions exist is in
question,” Voith says.
A number of cases in cities and counties with breed
bans have underscored the fallibility of animal control
when it comes to identifying pit bull terriers. Last year
UNFAIR ASSUMPTIONS
Voith’s research throws a monkey wrench into
more than just breed-discriminatory legislation. It
also challenges the feasibility and fairness of breeddiscriminatory policy wherever it might be found,
be it policy set by landlords, dog parks, dog rescues
and shelters, even insurance companies. American
Family Insurance, for instance, denies homeowner’s
insurance to people with pit-bull-terrier-type dogs.
It’s conceivable then, given Voith’s research, that a family
may think they have adopted a pit bull terrier (because
that’s what they were told when the family adopted the
dog) and come to find that their insurance company
won’t cover them anymore or that their landlord won’t
allow them to remain on his property.
By Ted Brewer Reprinted from Best Friends Magazine, March/April 2011
a g gr e s s i o n a n d d o g s
“no significant difference found between breeds.”
INTRODUCTION
On July 5, 2000 the government of Lower Saxony, Germany ruled that 14 breeds of dogs were especially
dangerous and placed restrictions on the ownership, management and breeding of dogs of these breeds.
The breeds cited included Bull Terriers, American Staffordshire Terriers, Pit bull Terriers, Staffordshire Bull
Terriers, Rottweilers and Dobermans. Exemption from the restrictions required that the owner and dog pass
a standardized temperament test administered by veterinary behaviorists at the University of Veterinary
Medicine in Hannover, Germany. A passing score demonstrated that the dog displayed no exceptional
aggressive behavior or aggressive behavior in inappropriate situations.
MATERIALS AND METHODS
Dogs of
415 dogs of the targeted breeds were tested in 21 situations of dog-human
contact and 14 situations of dog-environment contact. The dog’s behavior in
the targeted
breeds signal
their intent
just like
other dogs
each situation was scaled from 1 to 7.
1
2
No aggressive behavior
Visual or acoustic threat behavior while backing
away or remaining stationary
3 Bite movements while backing away or remaining stationary
4 Bite movements while moving forward but stopping at some distance
5 Bite with preceding threat signals
6 Bite with no preceding threat signals
7
Bite with no preceding threat signals and unable
to calm within 10 minutes
70 Golden Retrievers, having been volunteered by their owners, were also tested using this same
standardized temperament test.
www.nationalcanineresearchcouncil.com
RESULTS
• There was no significant difference between the volunteered Golden Retrievers and the
dogs from the targeted breeds that were required to submit to the test in the occurrence
of aggressive behavior in inappropriate situations.
• Dogs of the targeted breeds signal their intent just like other dogs.
• Dogs of the targeted breeds are statistically no more likely to show inappropriate aggressive
behavior than are Golden Retrievers.
No indicators of greater dangerousness of any of the then-restricted dog breeds were found. Rather than
regiment dogs by breed, more emphasis should be put on the dog owners’ education.
This study contributed to the repeal of
breed specific legislation in Lower Saxony.
For additional information:
Schalke et al:, “Is breed specific legislation justified? Study of the results of the temperament test
of Lower Saxony”, Journal of Veterinary Behavior, (2008) 3: 97-103.
Ott et al., “Is there a difference? Comparison of golden retrievers and dogs affected by breed specific
legislation regarding aggressive behavior”, Journal of Veterinary Behavior, (2008) 3: 134-140.
Dr. Esther Schalke holds a degree in Veterinary Medicine from the University
of Hannover in 1997 and a Doctorate in Veterinary Medicine from the Department
of Animal Welfare and Behavior of the University of Veterinary Medicine of Hannover.
She has been a practicing animal behavior therapist since 1998 and runs the
Animal Behavior Clinic at the University of Veterinary Medicine in Hannover, where
she teaches courses in animal behavior, learning theory and behavior problems in
dogs as well as in cats. She runs puppy socialization and pet dog training classes,
training classes for SAR dogs and police dogs. She lectures nationally and internationally on various aspects of animal behavior.
Her recent areas of research include the various aspects regarding aggressive
behavior in dogs. For example, temperament testing, assessing and comparing
aggressive behavior in various dog breeds, including Pit Bull Terriers, Golden
Esther Schalke, PhD., DVM
Retrievers, and others according to the guidelines of the Dangerous Animals
Act of Lower Saxony, Germany (GefTVO) of 05.07.2000.
www.nationalcanineresearchcouncil.com
FEAR VS FACT
FEAR: “Pit bull” dogs have “locking jaws.”
FACT: No dog, of any breed or mix, has an anatomical structure
that could be a locking mechanism in their jaw.
“We found that the American Pit Bull Terriers did not have
any unique mechanism that would allow these dogs to
lock their jaws. There were no mechanical or morphological
differences. . .” Dr. I. Lehr Brisbin, University of Georgia
FEAR: “Pit bull” dogs have massive biting power
measuring in 1,000s of pounds of pressure per
square inch (PSI).
FACT: “Newtons,” a way to quantify force, is the unit of
measure consistently used in scientific studies, not pounds per
square inch, a measure of pressure which no studies use. Dogs
in general can range from 13 to 1394 Newtons. Lindner, DL, et.al.
Journal of Veterinary Dentistry
No dog is biologically equipped with a unique biting
mechanism or “style” that would differentiate them
from other breeds of dogs. No scientific research exists to
substantiate the myth that “pit bull” dogs bite differently or
more severely.
FEAR: “Pit bull” dogs attack without warning.
FACT: All dogs, including dogs commonly labeled “pit bull”,
signal their intent.
“Pit bulls signal like other dogs.”
The institute of Animal Welfare and
Behavior of the University of Veterinary Medicine, Hannover, Germany temperament
tested over 1,000 dogs.
FEAR: While there are some “pit bull” dogs with
good temperaments, they are the exception not
the rule.
FACT: The American Temperament Test shows the American
Pit Bull Terrier,American Staffordshire Terrier, and the Staffordshire Bull Terrier (three pure breed dogs, typically
referred to as “pit bulls”), as well as the dogs labeled “Mixed
Breed”, consistently score above the average for all breeds
tested, year in and year out.
The American Temperament Test Society, www.atts.org
Every dog is an individual and should be evaluated as such.
and opportun
ent
FACT: There is no scientific evidence that one kind of dog is
more likely than another to injure a human being than any
other kind of dog.
ity
pit bull” dogs
for “
ng equal tre
Securi
atm
FEAR: “Pit bull” dogs are more dangerous than
other dogs.
A N I M A L FA R M
FOUNDATION, INC.
SINCE 1985
www.animalfarmfoundation.org
“…Controlled studies have not identified this breed group
[pit bull-type dogs] as disproportionately dangerous.”
American Veterinary Medical Association (AVMA)
Obama Administration Opposes
Breed-Specific Legislation
In an unprecedented initiative, the White House released a statement yesterday stating that the
Obama Administration does not support breed-specific legislation (BSL). The statement, now
posted online1, was a response to an anti-BSL petition created last December which quickly
garnered more than 30,000 pet-loving signatures.
Referring to the position taken more than a decade ago by the Centers for Disease Control, an
agency of the US Department of Health and Human Services, the White House reminded readers
that “research shows that bans on certain types of dogs are largely ineffective and often a waste
of public resources.”
While we are thrilled to read the White House statement, we want to point out that research
shows that breed bans and other breed discriminatory regulation are completely ineffective and,
in consequence, a total waste of public resources.
“…the White House
reminded readers that
“research shows that
bans on certain types
of dogs are largely
ineffective and often
a waste of public
resources.”
The White House emphasized the critical husbandry issues that
are inseparable from the human-canine bond. The White House
also pointed out that that it is impossible to calculate bite rates by
specific breeds. In support of the White House position,
extensive surveys on both coasts have shown that visual breed
identification of dogs of unknown parentage correlates extremely
poorly with DNA analysis2,3; and that observers, even animal
professionals, may disagree with each other when guessing at
the breed or breeds in the same dog4. Poor correlation with DNA
analysis and inter-observer disagreement call into question
media reports about dog bites, and, more importantly, the
reliability of past epidemiological studies that attempted to
correlate dog bite-related injuries with breed.
The Administration has now lent its weight to the official position
against BSL previously adopted by the CDC. As the CDC did, the
Administration refers readers to the community-based approach
described in the landmark paper, “A community approach to dogbite prevention,” which was the work of the American Veterinary
1
www.nationalcanineresearchcouncil.com
Medical Association’s (AVMA) Task Force on Canine Aggression and Human-Canine
Interaction5. The AVMA’s analysis and recommendation was published in 2001, and has been
publicly available for many years. A more recent review of the literature of controlled studies of
dog bites published by AVMA last year covered 40 years and two continents and concluded that
no type of dog should be considered disproportionately dangerous6.
A community approach can be seen in the responsible pet ownership model so successfully
implemented in Calgary, Alberta.
In addition to the White House and the Centers for Disease Control, BSL is opposed by major
national organizations, including the Humane Society of the United States, the American Society
for the Prevention of Cruelty to Animals, Best Friends Animal Society, the American Veterinary
Medical Association, and the National Animal Control Association. Last summer, the American
Bar Association’s House of Delegates passed a resolution urging “all state, local and territorial
legislative bodies and agencies” to repeal any BSL currently in place7.
Official sentiment against BSL has been growing substantially. Recently, Massachusetts,
Nevada, Connecticut and Rhode Island all passed state laws that prohibit their towns and
counties from regulating dogs on the basis of breed. 16 states now prohibit BSL.
From January 2012 – May 2013, more than three times as many American jurisdictions have
either repealed existing BSL, or declined to enact BSL, as have put BSL into effect.
The White House statement is the highest profile example yet of how the tide has turned against
BSL at every level of government. It is important to keep the momentum going, in favor of
community models that hold all dog owners responsible for the humane care, custody and control
of their dogs, regardless of breed or appearance.
Updated: 20 August 2013
2
SOURCES
1
The White House. (2013). Breed-Specific Legislation Is a Bad Idea. Retrieved from:
https://petitions.whitehouse.gov/petition/ban-and-outlaw-breed-specific-legislation-bsl-united-states-americafederal-level/d1WR0qcl
2
Voith, V.L., Ingram, E., Mitsouras, K., & Irizarry, K. (2009). Comparison of Adoption Agency Identification and DNA
Breed Identification of Dogs. Journal of Applied Animal Welfare Science, 12(3), 253-262.
3
Levy, J.K. (2012). DNA and Survey Results: What Kind of a Dog Is That? Retrieved from
http://sheltermedicine.vetmed.ufl.edu/library/research-studies/current-studies/dog-breeds/dna-results/
4
Voith, V.L., Trevejo, R., Dowling-Guyer, S., Chadik, C., Marder, A., Johnson, V., & Irizarry, K. (2013). Comparison of
Visual and DNA Breed Identification of Dogs and Inter-Observer Reliability. American Journal of Sociological
Research, 3(2), 17-29. Retrieved from: http://article.sapub.org/10.5923.j.sociology.20130302.02.html
5
American Veterinary Medical Association: Task Force on Canine Aggression and Human-Canine Interaction.
(2001). A Community Approach to Dog Bite Prevention. Journal of the American Veterinary Medical
Association, 218(11), 1732-1749. Retrieved from:
https://www.avma.org/public/Health/Documents/dogbite.pdf
6
American Veterinary Medical Association: Animal Welfare Division. (2012) . Dog Bite Risk and Prevention: The Role
of Breed. Retrieved from: https://www.avma.org/KB/Resources/Backgrounders/Pages/The-Role-of-Breed-inDog-Bite-Risk-and-Prevention.aspx
7
American Bar Association. (2012). 100: Proposed Resolution and Report. Retrieved from:
http://www.abanow.org/2012/06/2012am100/
3
www.nationalcanineresearchcouncil.com
DENVER’S BREED-SPECIFIC LEGISLATION:
BRUTAL, COSTLY, AND INEFFECTIVE
In 1989, the City and County of Denver banned the keeping of “pit bull” dogs. Thousands of
companion dogs have been seized and killed in the years since. Despite significant and costly
legal challenges, and notwithstanding a Colorado state law that recommends that cities and
counties not regulate dogs on the basis of breed or appearance, Denver has maintained its ban.
Presumably, Denver’s purpose, and the motive behind its ruthless enforcement, was to improve
community safety.
Has Denver’s result been worth the public resources that the County has expended? Has
the result been worth the price paid by pet owners and their treasured family companions?
Does Denver have a lower rate of dog-bite hospitalizations than other counties? Has the
ban eliminated dog bite-related fatalities in Denver?
The answer to these questions is: NO.
The answer to these questions is: NO.
“Breed-discriminatory
Denver County, with a
population of about
twice that of breedneutral Larimer County,
had more than seven
times as many dog biterelated hospitalizations
during the same
seventeen-year period.”
DENVER CONTINUES TO HAVE SIGNIFICANTLY
HIGHER DOG BITE-RELATED HOSPITALIZATION
RATES THAN OTHER COUNTIES.
Dog bites are not a serious public health issue. Dog
bite-related hospitalizations constitute less than 0.5%
of the total hospitalizations/transfers on account of
unintentional injuries in the United States.1
While dog bite-injury hospitalizations are infrequent,
the breed-discriminatory County of Denver continues to
have a significantly higher rate of dog bite-related
hospitalizations than all counties in the state except for
one, according to the Colorado Department of Public
Health and Environment statistics. The Colorado
Trauma Registry Database has classified Denver
County with a rating of “H” - an injury rate significantly
higher than the rate for the state - over a seventeenyear period (1995-2011). Denver is one of only two
counties in the state designated “H”. Denver’s breed
ban was enacted six years prior to the first year
reported (1995).
1
www.nationalcanineresearchcouncil.com
Three counties (El Paso, Boulder, and Larimer) were designated "L," with significantly lower
rates of dog bite-related hospitalizations than the state, during the same time period:
El Paso County (2010 pop.: 622,263) – 189 dog bite hospitalizations (1995-2011)
Boulder County (2010 pop.: 294,567) - 59 dog bite hospitalizations (1995–2011)
Larimer County (2010 pop.: 299,630) – 50 dog bite hospitalizations (1995-2011)
Denver County (2010 pop.: 600,158) – 367 dog bite hospitalizations (1995-2011)2
Breed-discriminatory Denver County, with a population of about twice that of breed-neutral
Larimer County, had more than seven times as many dog bite-related hospitalizations during the
same seventeen-year period.
A study of Denver dog bite-injury hospitalizations published in the Journal of Pediatric Surgery
reported that, “because it is illegal to own a pitbull in the County of Denver, we rarely see injuries
caused by this breed.”3
THE BAN HAS NOT ELIMINATED DOG BITE-RELATED FATALITIES IN DENVER.
Dog bite-related fatalities remain exceedingly rare in Denver, and in Colorado, just as they are
everywhere. In the last 46 years, there have been a total of 9 dog bite-related fatalities in
Colorado.
One (1) of Colorado’s fatalities occurred in Denver 7 years after enactment of the ban, and is
attributed to a type of dog not subject to the ban.
2
A TIME FOR CHANGE
In 2012, the AVMA published a report stating that there is no evidence from which to conclude
that one kind of dog should be considered disproportionately dangerous. The report also stated
that it has not been shown that breed-specific legislation has ever reduced the rate or severity of
dog bite-related injuries anywhere.4 The lack of results in Denver is another example of what
has been a failure of breed-specific legislation on a worldwide basis.
The American Bar Association (ABA) House of Delegates passed a resolution in 2012 urging all
towns and counties in the United States to repeal any breed-specific laws still in effect. The
analysis supporting the resolution highlighted the many problems of breed-specific legislation:
significant questions of due process; waste of government resources; failure to produce safer
communities; inability to reliably identify dogs to be regulated or seized; and infringement of
property rights.5
Consistent with the ABA recommendation, Massachusetts, Nevada, Connecticut, and Rhode
Island have recently enacted laws that preempt towns and counties from regulating dogs on the
basis of breed. From January 2012-May 2013 more than three times as many jurisdictions either
rejected proposed breed-specific legislation or repealed an ordinance previously in effect as
enacted breed-specific legislation of any kind. The message of this trend is clear: improved
community safety results when we hold dog owners responsible for humane care, custody and
control of their dogs, regardless of the dogs’ presumed or actual breed. 6
By every standard of responsible governance, Denver should acknowledge that its breed ban
has been an unambiguous failure, and abide by the wisdom of the Colorado state legislature.
Denver should repeal its costly, ineffective, and brutal breed-specific legislation.
Updated: 2 August 2013
3
www.nationalcanineresearchcouncil.com
SOURCES
1
Calculated from source data on Nonfatal Injury Reports, 2001-2011, Unintentional Dog Bite, Both Sexes, 2001-2011,
Disposition: Transferred/Hospitalized, All Ages, available at:
Centers for Disease Control and Prevention. Web-based Injury Statistics Query and Reporting System
(WISQARS) [Online]. (2003). National Center for Injury Prevention and Control, Centers for Disease Control and
Prevention (producer). Retrieved from: www.cdc.gov/ncipc/wisqars. [2013 May 3].
2
Data retrieved from Injury Hospitalizations, Bite/sting – Dog, 1995-2011, All Gender, All County, available at: Colorado
Department of Public Health and Environment: Colorado Health Information Dataset (2011). Injury Hospitalization
Data. [Online]. Retrieved from: http://www.chd.dphe.state.co.us/cohid/topics.aspx?q=Injury_Hospitalizations
[2013 April 25]
3
Calkins, C.M., Bensard, D.D., Patrick, D.A., & Karrer, F.M. (2001). Life-threatening dog attacks: A devastating
combination of penetrating and blunt injuries. Journal of Pediatric Surgery, 36(8):1115-1117.
4
AVMA Animal Welfare Division. (17 April 2012). The Welfare Implications of The Role of Breed in
Dog Bite Risk and Prevention. Retrieved from:
https://www.avma.org/KB/Resources/Backgrounders/Documents/dog_bite_risk_and_prevention_bgnd.pdf
5
American Bar Association. (2012). 100: Proposed Resolution and Report. Retrieved from:
http://www.abanow.org/2012/06/2012am100/
6
National Canine Research Council. (2013). A Community Model for Responsible Pet Ownership: Calgary Alberta.
Retrieved from:
http://www.nationalcanineresearchcouncil.com/uploaded_files/tinymce/Community%20Model%20for%20RPO_C
algary.pdf
National Canine Research Council. (n.d.) Animal Services and the Responsible Pet Ownership Model. Retrieved from:
http://www.nationalcanineresearchcouncil.com/uploaded_files/tinymce/Bruce_Revised%20Viewpoint_updated%2
0title%202012.pdf
4
www.stubbydog.org
Reproduced by permission of Stubby Dog, www.stubbydog.org and author Micaela Myers
Imagine being locked in a dusty shed for months on end. You can’t go outside because people
might see that you look like a pit bull and turn you in. If you’re turned in, you’ll be killed.
This is exactly how Otis lived after his hometown of
Fayette, Missouri, passed a breed ban in Feb. 2009. The
ordinance banned acquiring pit bulls. Pit bulls already in
the town could be grandfathered in if their owners met
certain requirements, including showing proof of $100,000
of liability insurance, muzzling their pets when in public
(on a leash no longer than four feet) and meeting specific
confinement requirements for dogs kept outside.
However, with a median household income in Fayette of
only $32,925 (in 2008), many residents couldn’t afford to
meet the requirements.
“These people can’t afford $1,500 a year for a rider on
their insurance policy,” said Melody Whitworth, the
Columbia, Missouri, area representative for Dogs
Deserve Better, a non-profit organization dedicated to
helping chained dogs.
and opportun
ent
ity
pit bull” dogs
for “
ng equal tre
Securi
atm
“There are a lot of dogs in hiding [in Fayette], and Otis
was one of those dogs in hiding,” said Kathryn Ward, the
Fayette area representative for Dogs Deserve Better.
A n i M A L FA R M
FOUnDATiOn, inc.
Since 1985
www.animalfarmfoundation.org
When the ordinance went into effect, Otis’s guardian
couldn’t afford the insurance policy. “Otis ended up being
hidden in a shed in his backyard and chained,” Whitworth
said. “This went on for months and months. His owner
would go out and feed him when he felt like his
neighbors weren’t home and wouldn’t see him.”
When Otis’s guardian had to call an ambulance for his
mother-in-law one night, the authorities discovered the
dog, and his guardian was cited. “[He] was told to either
get rid of the dog or the dog would be killed,” Ward said.
The guardian contacted the local shelter, which luckily
(continued on next page)
LegiSL ATiOn
THe crUeL cOST
OF BreeD SPeciFic
LegiSLATiOn
referred him to Ward, who had been working with the
shelter, trying to save as many area pit bulls as possible.
Jessica Murphy of Columbia was searching through the
listings om Petfinder.
“He worked directly with Dogs Deserve Better”,
Withworth said. He signed a relinquishment form and
allowed us to put Otis on Petfinder
to try and rehome him in order to
keep him out of a shelter situation.
“I came across a picture of this dog in what appeared
to be a barn, and he just looked pitiful. It was so sad,”
Murphy said. “There was just something about him. When I found out
about his story, it made it that much
more heartbreaking. I had to meet
that dog. I had to help that dog.”
After months of being tied in the
dark, Otis would growl when
approached by strangers, but Ward
and Whitworth saw this as a
consequence of his circumstances
rather than a reflection on his true
nature. Prior to the ordinance, Otis
had fathered several litters of
puppies. One of the first things Dogs
Deserve Better did was to arrange
to have Otis neutered.
Murphy’s husband agreed, and the
couple went to meet the then
4-year old Otis.
A miracle was in the
works for Otis. Unlike
most victims of breed
bans, he was about to
get a second chance.
While Whitworth worked to find a
new home for Otis, Ward tried to
educate his grandson about pet
overpopulation and the problems
associated with chaining (including
increased aggression).
“He said that he could see it was
wrong to chain him,” she said. “My
feeling is that education of the people is the only thing
that’s going to change the way pit bulls are treated.That
is when people need to focus their efforts instead of
these stupid bans that don’t do anything but further
harm the dogs.”
She said that according to her research, dog bites in
Fayette have actually increased since the ordinance.
Through their collective efforts, a miracle was in the
works for Otis. Unlike most victims of breed bans, he
was about to get a second chance.
“His allergies were horrible, I guess
from living in his barn that was so
dusty. His eyes looked like they
popping out of his head,” Murphy
said. “He came right up to me, and I
fell in love.”
Jessica and Robert have two
children, ages 6 and 7, and are
expecting their third child.
“He’s very patient with the kids,”
Murphy said. “He’s the best dog
we’ve ever had.”
A year after his adoption, Otis now lives with three
other dogs, including his son, whom the couple also
rescued. Today, Otis has his own spot on the couch,
inside with the family.
His transformation from backyard dog in hiding to a
beloved family pet illustrates both the tragedy of breedspecific legislation, which will sentence dogs to death
just for the way they look, as well as the fact that all
dogs, regardless of breed, are a reflection of how
they’re kept and treated.
Reproduced by permission of Stubby Dog, www.stubbydog.org and author Micaela Myers