To feed your cat, simply open the 2.9 oz can of Hill's Science Diet Adult Tuna & Vegetable Entrée canned cat food. You can serve it directly to your adult cat. It's best to follow the feeding guidelines on the package according to your cat's weight. Make sure to always provide fresh water alongside the food. Keep in mind that this food is not for kittens, pregnant, or nursing cats. Store the unopened cans in a cool, dry place. Once opened, cover the remaining food and refrigerate it, and use it within a couple of days.