For a dog no longer growing and only at maintenance level requirements, there is no need for there to be a difference in the formulation between the kibble for the large dog versus the small dog in general. By this, I mean that if you have two dogs that are identical save for one being 15 pounds and one being 50 pounds, there is no difference other than quantity, which usually has a linear correlation to the increase in body weight.For some reason I thought this was a larger breed, boy what a ding-a-ling I can be. I googled this breed then googled Wellness and the Super5Mix does not come in a small breed puppy formula, yet. So I guess you would be correct. I never have figured out the difference between Large breed formula vs small breed formula. They always are so close, I just don't get why the make a large and a small breed formula, Maybe for the size of the kibble ??