Many common dog breeds carry genetic defects that cause lifelong pain and compromised quality of life, making responsible breeding essential for welfare.
Hereditary disease in dogs represents a welfare problem that compounds across generations - each generation of affected dogs inherits and experiences conditions that could have been prevented through responsible breeding decisions. Dogs with progressive hereditary conditions like retinal atrophy, degenerative myelopathy, or Duchenne muscular dystrophy experience progressive deterioration that reduces quality of life over months to years. Bleeding disorders cause potentially fatal hemorrhages from minor injuries. Heart defects produce progressive cardiovascular compromise. The availability of DNA tests that identify carriers before they are bred offers a direct route to reducing disease prevalence - breeders who test and avoid breeding carriers prevent these conditions from appearing in the next generation. The challenge is translating scientific capability into consistent breeding practice through registries, consumer demand, and breeder education.