OK here is my question along the same line my Buster is an 8-9 month old pit and we have a 3yr old American Bulldog intact female. It seems he has been slowly coming into his I have the Jewels in this house phase. He has been showing PA and DA. And it seems he wants to seclude himself from the whole house. We have alot of people in a smallish home. He has even gotten to where he will not let me pet him below his collar? As well as staking the entire upstairs for himself. How do I get him past this phase? What is the right way to deal with the aggression? I have never owned a male let alone a male pit. Up until now he has been the best puppy I could have dreamed of having! Smart and sweet as sugar.