I have a 9mo Pit ofcourse and he has developed aggression toward my other male and my moms male dogs he grew up with them.. He has been around my other mix breed male dog since he was 6 weeks old he use to do everything with him sleep eat play all that an now hes attacking him viscously and it stressed me out having to pull him off another dog every day... I need some help. I plan on getting him fixed as soon as i get the money to do so. If anyone has had this happened or has any advice to offer please do so.