thanks for the reply! I haven't noticed his belly turning pink at all. However, I have seen him sliding the side of his face across his log, and then smashing the end of his snout against it! I mean he's really drilling into it! I would think that this behavior would be trying to loosen the skin so he COULD shed, but he hasn'r really shown any signs of a shed (pink belly, opaque eyes, dull color etc). I have noticed that he usually does this after being handled.