It's a nice dog, but you don't teach a dog of that kind of to attack. It sounds like you have some lawsuits and losing your dog in the future.

Pitbulls were originally bred and trained in midevil times to tear the throats out of dying soldiers on the battlefield. I don't care what anyone says, they were bred to kill, and at this age, you are training your dog to do just that.

Like Stinky said, proper dog training. Training how to attack is not proper training, so don't use that dog as an image as a tough guy, to compensate for a small package.