Thank you for all the advice. The guy that had him said his only heat source was a ceramic heat lamp, it was on top of the screen on his tank but he also had a tree branch in there that came all the way up to it so he could have touched it thru the screen I guess. We actually found the wound on him when we took him out of the tank to take him home, the guy said it must have just happened but personally I doubt he even checked on him once a week. I am calling the vet we used for our Burm today to see when I can bring him in. My husband wanted to go ahead and get him a mouse but I was concerned that with that open wound stretching his skin out might split it or make it worse, any advice on that?