I haven't read every post on here because that would take a while, but I think it has gotten away from the point of the original post. My best friend had a vicious dog for years. He was nice to me sometimes, and he hated all males, human that is, and all other dogs. They finally put him down at 8 years old because he bit my friend in the face causing her to get 5 stitches in her lip. Every dog is different. But they never hit him. I think his problem was lack of training, but not everyone is going to agree with you. I hope rae rae's dog turns around with training before he hurts anyone. I took my dog to a trainer, because I'm not an expert, so I have no professional opinion. So I hope this comment has no negative affect on anyone. I've learned many things because of this site and everyone on here seems very knowledgable.