The nutritional requirements of aging cats differ from those of younger cats, so it's critical to adjust your cat's diet as it gets older to make sure those needs are satisfied. With the nutritional requirements of senior cats like yours in mind, ROYAL CANIN® Senior Ageing 12+ is specifically formulated and appropriate for cats over the age of twelve. The extremely appetizing kibble in this food has a crunchy exterior and a soft interior, which helps to increase your senior cat's overall appetite. A patented complex of antioxidants found in ROYAL CANIN® Senior Ageing 12+ helps senior cats as they age. Because ROYAL CANIN® Senior Ageing 12+ has a moderate phosphorus level, it also supports healthy kidney function, which is very advantageous for elderly people.