Thanks for the help everybody. I feel dumb for listening to the people at the shop we got him from and not checking in to it alot earlier. Today I officially kicked off the Operation Fatten Bunny up campaign. He got 2 regular size mice today, and he'll get two more on wednesday night. Gonna look into the small rats and see if they look too big, if not he'll just be on 2 mice twice a week for a while until he gets up to where he should be. Does that sound right? Thanks. You guys are awesome.