I got a full body werewolf costume for Halloween when I was a kid, and thought it would be funny to scare our dog. So I hid behind a door and when he walked in, I jumped out and roared at him. It wasn’t well thought out. He was half a second away from biting my face off. Thankfully I recognized the danger and ripped the mask off. He did not get scared. He was ready to murder. At least we knew he’d protect us from a werewolf after that.