how old was he when he was neutered? Luigi likes to hump his stuffed kitty cat. At 1st we would yell at him and take it away but he would get mad. So then we took it away all together and he went crazy. He kept running all ovver and looking everywhere for it. He also would empty out his toy basket and staert barking cuz it wasn't in there!!!
We hid it in this one room that we keep the door closed to cuz he is not allowed in that room. He must have sensed that it was in that room. He kept barking at the door. and scrathing and would dig. So we gave in and gave it back to him. He mainly just plays with it now and doesn't have much more interest in humping it. But he is getting fixed next month. He'll be 6 months then.