Well I got home from work and I found one of my four leos dead. He was in the middle of the enclosure and was stiff. It does not make any sense.. The others were fine tucked away in their hides but not this one. I checked the temps and it was all fine. 75 cool side and 100 under basking light. The enclosure is a "closed" type. He was fine this morning when I left them. He was only 6 months old.