Hello, I am in serious need of advise on what to do with one of my dogs. I have 4 dogs 2 fixed male pitties, and 2 fixed female mutts. My youngest pit boy (2 yrs) is having possive problems toward my other dogs. When he is sitting next to one of the family members and one of the other dogs wander over he growls and bears his teeth at them. Tonight things got worse when he and our other male got into a fight. We got them seperated, put a muzzle on the younger one and sent him to his crate for time out. I really need some tips or training suggestions on how to stop this behaviour. I love my boys so much and need to know what we as a family can do to either stop this or stop it from happeneing so often. Thank you so much!