Thanks for sharing everyone, it makes me feel much better. I think my subject title may have been a little misleading though
I'm not too worried about the aggressiveness, as he doesn't really show aggression towards me or other people. What I was mainly concerned about is that sometimes he gets too crazy with the shaking, and it makes me scared he's going to strain his tiny little neck. He's only 3lbs and has such a tiny neck...whenever he really gets into the toy shaking, it sometimes looks like his neck is going to snap off
