I've heard from alot of people around here and read in a few places that baby BP's can take an adult mouse straight out of the egg, maybe a small adult, but not hoppers and definately not fuzzies. Those last two just don't seem to be a substantial enough meal for the BP, even though the babies are small. Also, if you are getting your BP from a breeder, it won't come to you straight out of the egg, the breeder "should" (if he/she is reputable enough) have the BP eat a few times, get a little weight on it, and then send it to you. Having the baby eat the small adult mice provides them with the needed calcium and other nutrients that a hopper or fuzzy just hasn't developed yet, for example: Bones . Hopper and fuzzy mice, if I'm not mistaken, are still pretty much rubber(cartilage) instead of bone. So if that is the case, then the BP won't be getting the nutrients it needs early on in life and may have complications further down the road, which none of us wants (I hope...) Sorry to blabber on so much, just trying to help straighten out stuff. If anything I said was incorrect, someone please jump right on in.