The only one of its kind, Royal Canin Special Formula is designed for cats with sensitive digestive systems, and for cats that are just plain finicky. Cats with sensitive digestive systems usually have trouble coping with starch. Too much starch in a cat's diet can lead to intestinal irritation, and even diarrhea. Royal Canin Special Formula alleviates the problem by providing a higher level of fat and a lower level of carbohydrates. It is made from a selection of the best animal protein sources, enriched with essential fats. The result is a food that has excellent palatability and is especially easy to digest. Royal Canin Special Formula promotes a soft, shiny coat, and optimizes the acidity of urine for the smooth functioning of the urinary system.