I made my own theory about Five Night's at Freddy's! So, the animatronics don't want to hurt anybody. They just think that your out of your suit, and don't mean to kill you. Maybe they think that since no humans are supposed to be there, the manager might be upset if your not in your suit! And you die when your shoved in, because they are to strong! I know this is probably wrong, but my friend has been skyping the creator, and he can ask the creator.
