Brachycephalic — flat-faced — dog and cat breeds suffer from structural abnormalities caused by extreme selective breeding, with breathing difficulties, overheating, and eye problems causing chronic suffering.
Brachycephalic breeds represent one of the clearest examples of human aesthetic preferences creating animal suffering. Dogs bred for extremely flat faces develop structural airway obstruction that causes chronic oxygen deficiency, noisy breathing, and inability to thermoregulate normally. The normalization of these traits as "cute" or "characterful" ignores the welfare reality: these animals are chronically compromised by their own anatomy. The solution requires changing breeding standards to prioritize health, restricting the most extreme conformations through regulation, and shifting consumer preference away from extreme brachycephalic types through education.