Once your cat reaches about 12 years the cells begin to age more quickly you will notice that your cat slows down and is less active each cat reacts differently with some losing weight however in neutered cats this often leads to increased body weight so it is important that you feed your cat the right food to suit its body and nutritional needs royal canin ageing sterilised 12 dry senior cat food will help your cat to age gracefully it contains a special antioxidant complex with vitamins