My chin sometimes bites on my skin, and pulls back. He does this to other things, such as fleece items, and of course some things he wants to move around. He tends to do this more often when he gets "mad" at me for taking away something he shouldn't chew. Just wondering if anyone knows why he does this. I'm not bothered by it, just was curious as to whether he is trying to do something or if he's just being a brat lol.