Many of the terriers in their mother countries back in the old days used to put some of the terrier breeds through extreme testing conditions for gameness…some were put in a barrel with a badger or other tough varmit and if the terrier could take the punishment and kill the varmit then the terrier passed as a potential breeder…I’m thinking it had to pass a hunting test as well…
Many of the terrier breeds have smaller, dark eyes and do not protrude past the head…they are flush with the skull…they are probably bred this way to minimize debris in the eyes when going to ground or to minimize injury when engaging dangerous game in close quarters…
The APBT…the game bred usually has the same type of eye…my thinking is that they were not intentionally bred this way…the APBT that were the winners in the pit were bred…the genetic make up of the winners included more genes from the terrier influences such as the terrier eye…
Don’t take this as fact about the APBT eye…it is theoretical thinking…
As far as eyes go. A lot of this is just conjecture...
It is quite feasible.
When looking at the pitbull they by the standard are supposed to have almond shaped eyes
Whereas American Bulldogs have round eyes
My dogs have round eyes because they are by percentage mostly AB.
While the half siblings of them that are full pit have the almond eyes they are supposed to have.