About two months ago my girlfriend picked up a stray dog. She is a one year old, not spayed/neutered, has heart worms (which is why she has not been spayed/neutered yet) Lab Pointer Pit Bull Mix. We named her Rogue (she's got a small white spot on her head so I thought she looked like Rogue form X-men) and I love her very much. The only problem is that I know nothing about pit bulls. I know labs, because I grew up with labs, however, I have never really been around a pit bull before. So is there any advice y'all can give me? She's a pup so I don't know if training her is going to hard. And she kinda growls at other dogs and strangers, so I don't know if that is because of her breed (I know nothing about pits so I am very sorry if that was offensive) or if she growls because she is not use to strangers or has not been socialize with other dogs.