Mine becomes possessive, hyper and mildly aggressive. I cant put a hand near him or its source. That would be v foolish! He does the rolling and biting (if its a stuffed toy) or he will eat it if I use the actual stuff (Gawd help me if the police search the house -I have a plastic food storage bag with the dodgy looking stuff hidden in a drawer lol) It doesnt last long, he walks away in less than 5 min and goes back to being his sweetheart self.