We had a lot of trouble finding a food that Belle would even try to eat. Ever seen a dog starve herself, even though there is food in her face? Anyway, we finally tried Ko-op as a joke. But she ate it. We also raised our pup Prince on it. When we brought him home, he could fit in one hand he was so little. Now, he barely fits in my lap. They all eat well, and there poop seems fine. Our vet said keep it, so we do!