Sorry, I should have put all the details in my OP!So far I've offered live mouse hoppers, one live rat pup, and one f/t mouse fuzzy. I always feed in the enclosure, not moving or disturbing them before/after feeding. He's in a 6qt Sterilite tub in one of my racks, with 3" flexwatt giving him belly heat at 90 - ambients are a bit low around 75, which is the case with ALL of my tubs (it's always cold here). He has one small hide, and I just switched him from paper towel to Carefresh bedding... thought that would offer more security than paper, and I can't use Aspen due to allergies.