You know Coyote Peterson? He's the wildlife guy who lets animals bite him on the show "Brave Wilderness". He did the world's most painful wasp back in October, and his newest one is the common snapping turtle. He let it bite his hand.
First he glued a piece of wood alongside the bite area, to make sure the turtle didn't bite straight through. But still. Then he had to splash rubbing alcohol on it, because it wouldn't let go.