We actually have a dog on this product and she is doing GREAT!!! My sons dog Aiko had been hit by a car before we got her and it had cruched her pelvis she didn't use that leg to walk she sorta hopps on her back legs we could never get the dog to put on weight or show any muscle in that back leg. 2months on that food and she filled out she looks good. Plus I kid you not she has muscle not a lot but her leg doesn't look caved in anymore. I was really pleased with the food.