She is allegedly pure staffy, but she's 17 inches at the shoulder which is too tall for the breed standard. Dh bought her from a pet shop so she is probably from a backyard breeder with 2 non kc registered animals red for profit. I wasnt happy at the time as would have preferred a reputable breeder or pref a rescue, but done is done and she is an amazing dog and such fun. Temperament and mannerisms wise she is unmistakeably staffy, she smiles, farts, begs for food, joins in conversations, chases the 3 white hairs on the end of her tail etc etc. oh and she really really does love playing with the kids. I think she is probably pure bred, her markings are very typical, she is just a leggy version caused by not breeding to the standard.