I suspected heat had something to do with it. Idk, somewhere I read that you don't necessarily HAVE to heat your rodents as long as they are completely thawed. I guess heating is merely to entice them and allow them to "track" the prey better, so to speak. I'm learning something new every day. I'll take pics of his eyes soon and post them as I am worried about his hydration. I've struggled with humidity since I got him and he's only recently started having complete sheds. His first 3-4 sheds were spotty at best and his eye caps never came off. His last two sheds have been near perfect so I guess that means I'm getting somewhere.