Seriously! I don’t understand why people think it’s fine to breed flat-faced / screw tail dogs. That facial structure is called “brachycephaly” and causes difficulty breathing and poor temperature regulation, amongst a myriad of other health problems.

Many veterinarians consider breeding brachycephalic dogs to be unethical (source ).

Not-so-fun fact: the genetic variant associated with this brachycephalic structure has a human counterpart (source ) that causes a very rare disorder called Robinow Syndrome. For the nerds like me, it’s mutations in some Wnt pathway genes like DVL1 (“disheveled 1”) and DVL3 in humans, DVL2 in dogs.