Oops! I Accidentally Castrated the Alpha King

Synopsis

On my first day as a licensed vet, I saved a stray puppy, removed his damaged tail, and gave him the full neutering package. Then he turned into a six-foot-four naked man. Not just any man: Alpha King Shawn. Now he's pinning me to my surgical table, demanding I find the missing part I tossed in the trash. He says he means his tail. I think he's protecting his pride. How do I survive accidentally 'castrating' a werewolf king?