I feed mine 2 adult mice once a week. Sometimes I feed him a small rat something a little bigger than fuzzy or hopper. The last time I feed him that I didn't think that he would be able to get it down, but he did. I would try feeding them a fuzzy rat one week and see how they do. After they get it down, look for the buldge in their stomach if it is that noticable then go with that until you can not see any buldge. But generally you want to feed them food that is the size of their bigest part of their body. We want to see some pics whenever you can get them up. Approx. how old are they?