Brachycephalic Dog Breeds - HSVMA
https://www.hsvma.org/brachycephalicBrachycephalic dogs have decreased capacity for thermoregulation compared with non-brachycephalic dogs. Brachycephalic dogs have lower oxygen saturation levels in the blood than non-brachycephalic dogs. Clinical signs due to upper respiratory disorders were noted in 22% of dogs with extreme brachycephalic conformation.