I've recently noticed that Cheshire sleeps like a rock. He loves his little bird teepee I have and when he sleeps in there it takes forever to wake him up! I'll pet him to see if I can coax him awake, I'll poke him, then give the whole teepee a little shake and he refuses to stir! It's insane and scared the heck out of me the first time lol. Anyone else's rat sleep so heavy?