Milly has never been a particularly big eater unless it's people food, lol. She will never eat when she is by herself for example. A couple of months ago (we are on our second or third bag of food) we changed her food to the Blue Buffalo grain free salmon formula. She is always hungry. She can hardly wait for her food in the morning and we are rationing it so that she doesn't gain weight. Is this because this food is grain free or some other reason? She eats her full bowl and still seems sooo hungry and not in a corgi way just hungry. Does anyone else have this experience? I know that food has been discussed alot on this site but I couldn't find a reference to this type of behaviour.