Selective breeding for extreme physical traits has created severe health problems in many popular dog breeds. These inherited conditions cause lifelong suffering for millions of dogs worldwide.
Brachycephalic breeds literally struggle to breathe throughout their lives — a state that would be considered a welfare emergency in any other context. Many brachycephalic dogs require surgery merely to function adequately. Cavalier King Charles Spaniels with Chiari malformation experience persistent head and neck pain from neurological pressure. Selecting, breeding, and purchasing these animals perpetuates a cycle of suffering. Welfare organisations argue that the popularity of breeds with inherent structural disabilities normalises preventable suffering on a massive scale.