[Buster Brown]

I would suggest that you consult a trainer who is an animal behaviorist who deals with aggressive dogs. Have them come to your home to work the the dog and the whole family. Buster is my first dog and I knew very little about training. He had to be hospitalized when he was 4 months old and after he came back from the hospital he started showing signs of aggression that he had never exhibited before. I was concerned that perhaps he had been mistreated there ( We have found a new Vet Hospital) I had a trainer come out to teach how me how to deal with his aggressive behavior before it escalated to biting. Good luck with the retraining.