I picked up two rescues that had been housed in the same enclosure for about 8 years. No problems other than the fact that they didn't have but one hide, so they would both get in it and it would basically just sit on top of them. I have them separate now so they both have ample space, heat, and hides. I wouldn't recommend it by any means but there are a few instances where it may work. Still not worth the risk IMO.