Choosing a dog breed is a welfare decision affecting a potential companion for 10-15 years; considering health, temperament, and exercise needs alongside appearance prevents welfare problems from the outset.
Breed selection is one of the highest-leverage welfare decisions available to prospective dog owners, yet is frequently made primarily on appearance with minimal consideration of health, temperament, and exercise requirements. Choosing a breed with known severe health problems — extreme brachycephalics, merle-merle combinations, extreme size — almost certainly leads to welfare problems for the individual dog and healthcare costs for the owner. Welfare-conscious breed selection uses health testing data, breed-specific health schemes, and honest assessment of lifestyle match.