Please don't put a bully down, try adoption at least.. I have 5 and their aggression can come from jealousy normally against another dog. But they must know who is in charge if not he will take charge as the "pack leader". Im not sure if he is neutered but I would definitely consider. He might be trying to rank himself within the pack ( you, son, wife, new puppy).
Answered by olliesbullies - 6/17/2012 1:37:59 AM