An important note about Bull Snakes: It's very hard to keep them from hibernating, so either ask a vet for suggestions to "keep it awake" or just let it hibernate. P.S. I got this info from a book by Chris Mattison (a well known author on reptile care books and someone who has decades of experience with them) so I don't want some know-it-all disagreeing with me. I bet Chris knows what he's talking about. Off topic: has he made a revised 4th edition yet for TCRAIC?