Based on the latest research in palatability, Royal Canin understands that each cat interprets the aromas of a food according to its individual preferences. Selective 31 Aromatic Attraction is designed to appeal to cats that choose a food based on how it smells. With 60 to 65 million olfactory cells, a cat's sense of smell is acute, and she is very sensitive to aroma. In comparison, a human only has 5-20 million olfactory cells. Some fussy cats are attracted to the aromas of a food based on their individual preferences. Selective 31 Aromatic Attraction features a specific aromatic profile to stimulate the preferences of those cats. The complex of active nutrients, including biotin and Omega 6 fatty acids, helps keep your cat's coat shiny and healthy. The special formulation helps maintain ideal weight with a moderate energy content.