I have a 50 lb. sulcata, he has a very nice heated apartment and free range of a fenced acre and a half. The weather is nice and today he has decided to burrow down under a table in a covered area outside my house. It's going to be 46 tonight, my question is can I just cover him up and let him sleep there tonight? I do hate lugging a 50 lb tortoise 100 yards and he seems quite content there.