Lol. Hmm. Strange. Maybe it's only because he's in shed. I would definately keep an eye on it. The only time I've ever seen a dent has been becuase of low humidity. Of course, that's not saying much. I only have 10 snakes, and not nearly as much experience as some. And, I've never had one that cranky. Lol. Are you feeding him enough. My hatchling pastel is cranky, but it's time upgrade her food.