The head needs to have certain things in it for the animal to ... live. When you breed the head smaller, the same things still need to be in there, they'll jus

The head needs to have certain things in it for the animal to ... live. When you breed the head smaller, the same things still need to be in there, they'll just have less space. Thus, breathing problems, brain literally not fitting in the skull, eyes bulging out... Breeding dogs for looks and not for features is just plain stupid. It's like the dog world is stuck in the ye olde web times when we gave designers Flash and they went completely nuts with "user" "interfaces" which were neither usable nor could they be called interfaces.