the shark is easy to understand, it's tracked by the plush sound, if you squeeze it too much the shark attacks, if the door is open even one or two squeaks will trigger it, so if you hear the door open don't use the plush and close it on the cameras, if you squeeze too much it'll attack, now if it does run to attack if your fast you can close the door but that's sometimes too slow aka your trying to defend against something else