Gator tail shouldn't be too hard to get. There are gator and croc farms in the swampy regions down south. Think Florida Everglades, Okeefenokee, and Great Dismal swamps. Mostly, the gators are raised for the luggage trade.
EDIT: At least, they used to be. I don't know if the animal-rights people ever put a stop to it, or if the gators and crocs were declared protected species...