After many expensive vet bills and research we discovered that all of our dogs problems were due to malnourishment from this food. He is 12yrs old and we discovered that this food only provides half of the needed protein for his diet. It took about a year until he was having really bad skin problems and lethargy and weight loss. Once we changed the food the food and he was receiving enough protein then he perked right up. Their customer service tried helping by cutting out certain types of food, thinking it was allergies. I told them the problem once we found out but they didn't seem to be concerned or knowledgeable that this was the problem. We found many other cases of this issue with pet owners who have their older dogs on this program. They should know this and change the recipe for older dogs.