I feed my cats wet food applaws, natures diet, High life i also keep go cat down all day its the only dry food they will eat, , my oldest has just yesterday been for a vet check and she is very healthy , she is 10 years old and has always had go cat fish as a dry food, so im not sure how it does any harm, unless it comes on later in life . My vet said its fine as long as its not the main food.