03/02/2026
Breed-Specific Legislation Affects Shelter Dogs' Outcomes
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View profile for Rachael Kreisler, VMD, MSCE, DACVPM (Epi)
Rachael Kreisler, VMD, MSCE, DACVPM (Epi)
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How does breed-specific legislation affect dogs once they enter a shelter?
A recent retrospective cohort study by Dr. Sandra Kay Walker, DVM, CAWA, Lauren Powell, and Elizabeth Berliner, DVM, DABVP (Shelter Med, Canine/Feline) in the ASSOCIATION OF SHELTER VETERINARIANS INC's Journal of Shelter Medicine and Community Animal Health (JSMCAH) examined outcomes and length of stay for dogs subject to breed-specific legislation (BSL) compared to other breeds in a managed-admission municipal shelter.
Among 764 adult dogs admitted in 2022, 118 were classified as legislated breeds. In the full study population, legislated dogs were:
• More likely to be euthanized
• Less likely to be adopted
• Likely to experience a longer length of stay
When researchers created a weight-matched subset to account for size differences, live outcome rates were no longer significantly different. However, legislated dogs still experienced longer lengths of stay for adoption and return-to-owner, and a reduced likelihood of adoption.
Importantly, among dogs whose first outcome was euthanasia, non-legislated dogs were more likely to be euthanized for medical reasons. There were no significant differences between groups in euthanasia due to aggression or behavioral quality of life concerns.
The findings suggest that BSL creates measurable barriers to live outcomes, even in shelters actively working to secure adoption, transport, and reunification options. Policy environments matter, and they shape what is possible for dogs once they enter care.
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