I asked the Vet last month if he needed a special food. He said no. I will now have to return the dog food. I really appreciate your input. The protein is 26% for Innova compared to 20% for the IAMS we have been using. I will have to go speak to my Vet. I don't know why he did not think my question about the food was relevant. However, aside from the liver issue...he is scratching less from the lower grain. will get to the root of the problem. Thank you for mentioning the protein, Sparky thanks you too for your concern.