How big is the CL? Mine like to hide during the day and are most active in the morning and late evening, this has become more true as mine age. And don't freak out if you see them laying on their sides, its what they do and nothing is wrong with them, freaks me out every time though. My bet is you'll see your CL tomorrow when you put food in, they're gluttons as I'm sure you know. They can, as said above, get stuck in things as they grow, they like to claim a cave and don't realize when they've out grown it. Best to upgrade their "houses" before that's an issue. If you don't find him tomorrow start looking in hide outs and look closely, they seem to hang on to things even when you're moving them around