We bought a beautiful pit from a breeder who is now 1yr and to balance out that sin we rescued a pitbulll/pointer mix that was about 1 1/2 from a kill shelter. He had clearly been abused because he always showed his belly and would pee himself with the slightest reprimand. Things were good for about three months but now that he is a little better from his trauma he gets extremely jealous of the 3 human family members in the house. He could be laying peacefully with one of us and when the original pit comes around he all out attacks him without warning. We have had real fights with damage in our living room. The problem is it can happen at any second. They play, lie down together and every once in a while without warning the pitbull mix just digs in on the breeder pit. Any tips or suggestions on what to do about his jealousy or possessiveness?