Riff needed to eat quite a bit more on Pro Plan Sensitive Skin/Stomach than he has on other foods. I decided not to keep him on it for that reason. He usually eats 2 cups but was up to 3 1/2. Linus, my mom's dog, also needed more but he's a 10 lb dog so it's not as big an increase. He has a nice coat on it and seems to do well so she's keeling him on the Pro Plan.