Twinkie just LOOOOOOOOVES raw chicken liver. It's the only meal that I can count on him to clean out his dish. Usually he's a picky eater and leaves food behind. So I do like to treat him to a meal of chicken liver, and do so about once a week. I know too much liver is not good. I've just never found out how MUCH is too much. Are there any guidelines as to how much chicken liver is OK?