Mandatory health testing before breeding can eliminate or reduce many inherited diseases; understanding which tests matter for different breeds helps buyers and breeders make better decisions.
Health testing before breeding is one of the most direct ways to reduce inherited disease in dog populations and improve the welfare of future generations of dogs. Testing identifies animals carrying genes that cause painful or debilitating conditions, enabling informed breeding decisions that reduce the frequency of affected puppies. The effectiveness of testing depends on widespread adoption: if only some breeders test, affected genes remain in the population through untested lines. Consumer demand for tested breeding pairs creates market incentives for testing adoption. The reduction in hip dysplasia in tested breed populations demonstrates that systematic testing programmes can achieve real, measurable welfare improvements across generations.