I work at Petsmart, and recently took home a young male dumbo rat. He was attacked another rat in the same cage, and had to be in our "hospital room" for a couple of weeks for medication, thus me becoming attached to him. However, he is still very skinny and hunches over when he walks. I thought this may be an effect from the medicine, or stress from the attack, but I have been trying to put weight on him and he refuses most foods, except his typical diet. I have tried the yogurt drops, and he only takes a few bites, I have tried peanut butter, apple sauce, kitten milk replacer, and nothing that would normally help him gain weight is appealing to him. He has some chub around his belly, but his rib cage is concerningly noticable when handling him. Also, you can actually see his "man bits" (to put in non-graphical terms) which I have never really seen visible on a male rat before. Is this normal? I kind of think not. Has anyone else had this problem? He is very sweet, constantly licking and snuggling. In fact, right now he is cuddled against my neck grinding his teeth. I just don't want anything to happen to him.