you need 2 hides and really ...you don't need to buy the rock thing...go to the dollar store and get a small plastic bowl and cut a hole in it. Burn the edges down so it is not sharp. One on the cool side....one on the warm side.

Cover his cage up with a towel and don't touch him for a week. This literally is the hardest part cuz you just want to love on them. Don't freak out....balls are reknown for not eating when something is off. This will pass and soon you will be posting what a fatty you have.

Also considering where you got him....check him for mites....you can check out posts on here concerning this. And also read up on RI's ....just so you know the signs to look for.