When you attempted to feed your cat the new food, did you gradually introducing it? As in start off with say 10% new food and 90% old food and each day put more and more new food and less and less old food.archimedes said:my cat rejects any other food except Science Diet, original flavor. I did not raise this cat and according to her previous owners this is all she has ever eaten. She's a healthy cat though so i just stick with it. Whenever i have given her other varieties (including IAMS and other flavors of science diet), she just pukes it up.