Natural Cat Food Formula with Four High Quality Meat Meals and Reduced Fat and Protein – Cats Love the Taste! Originally developed for senior, overweight, and indoor cats, this is the same great formula in an attractive new package. It satisfies the needs of indoor cats with less protein, less fat, and higher fiber—making it ideal for weight management, as well. CANIDAE® Indoor Formula for Cats is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for maintenance.