To put it more into perspective for you, the Am Staff originates from APBT
blood (go back and read into the history on the first Am Staff ever registered, which was originally an APBT
, and follow from there).
We'll tell you the same thing we tell everyone else that comes with a similar question (what breed is my dog)... if you do not have registration papers and a pedigree on your dog, which shows where your dog came from, like a family tree, then unfortunately, you'll never truly know what breed of dog you have. Therefore, we'll refer to your pup as a dog of unknown origin, or a mutt (not meant to be offensive). If you want to know what you've got on your hands, without a doubt, the next dog you get should come from a reputable breeder with valid bloodlines and paperwork. We don't recommend you calling your dog a Pit mix, as that would be false representation of the breed in and of itself, as you stated above that you don't know what the parents were. I'm not trying to be mean or harsh, it's just the facts. Just like if you go and get a dog from a shelter labeled as a Lab, but looks like a weenie dog... the genetic make up and build of the dog can be totally misleading. This is why we don't recommend you call your dog a certain breed if you have no idea what the lineage is.
Just love your dog, train your dog and do right by your dog and you should do fine.