Suggested Amount to Feed per Day Based on Weight of Cat: 4lbs. = 1/3 cup 8lbs. = 1/2-2/3 cup 12lbs. = 2/3-3/4 cup 16lbs. = 3/4-1 cup 22lbs. = 1-1 1/4 cup These guideline amounts are a starting point and your cat may need more food depending upon age, activity and temperament. In order to reach optimal body condition, you may need to adjust food intake. This represents the total recommended volume of food per day. You should divide the total recommended feeding amount by the number of times you feed your cat per day to get the actual portion size per feeding. If you have a kitten, pregnant or nursing cat, we recommend feeding IAMS kitten food. Remember to have clean, fresh water available for your cat at all times. Because IAMS HEALTHY ADULT with chicken cat food is complete and balanced for maintenance, you do not need to add vitamin or mineral supplements. When introducing IAMS cat food, gradually mix it with your cat's current food over the course of 4 days