I'm new to this site so idk if I'm asking in the right place. I have 3 puppies, all brothers. We sit outside and play a lot and I have like an outdoor couch thing that I sit on and they all get up there and sit with me. However, one is very territorial. If he gets up there first and another tries to jump up he snaps at them. Idk how to correct this behavior. I tell him he is being bad but then I give him special attention so it's probably counter productive. Any ideas?