if your looking to fatten em up you can use royal canine for awhile, but then i would switch, to something that is less in fat because you don't want your baby becoming overweight. i use "authority harvest baked" it is a petsmart brand and it's all natural no corn or by products in it. and he looves it! alot of members had the same experience with rc and itching now my coco hardly itches from me changing his diet and his shampoo
hope this helps..