After spaying or neutering, your cat's nutritional needs change. Once a cat is spayed or neutered, energy requirements are reduced while appetite increases. This can make your cat difficult to satisfy at meal times. As experts in health nutrition, Royal Canin has designed a specific formula to meet the needs of your spayed or neutered cat. Royal Canin Spayed/Neutered Appetite Control is recommended for cats from 1 to 7 years old that always seem to be hungry and have a tendency to beg for food.