I don't have any boys anymore, but I had a problem with their fur being very dry. My best friend has boys and their fur is very soft and smooth like my girls' fur. My rats are fed a mixture of dried fruits, veggies, nuts, noodles, wet baby food, dry baby food, lentils, split peas, cat treats (not a lot), trail mix and fresh fruit and veggies, along with anything here and there we happen to have (piece of bread, cracker, popcorn).