For active outdoor cats (aged 1-7 years old) that may need a higher calorie intake to maintain weight. Also contains nutrients to help maintain joint health. Outdoor includes the precise calorie intake for outdoor cats. The higher-calorie diet supports their increased activity levels as well as the energy they burn from regulating their body temperatures. Helps support active cats' natural defences thanks to an exclusive complex of antioxidants and prebiotics. Enriched with a specific combination of nutrients to help maintain healthy joints and bones. Please note: Estimated cost per day and how long this product will last you is based on averages of age, size, breed and this being the ONLY source of food.