A wild beaver like a few miles from my house, and not a nutria, a real life flat-tailed beaver toothed fucking beaver. I was going to an artificial dam I use as a fishing spot and there he was. It was way bigger than I thought but I didn't want to disturb it so I turned around and went home.

In captivity? An Okapi? A rhino? Idk man I've been to many zoos and exotic zoos where you drive through and idk about the rarest.