Royal Canin Ageing Sterilised 11+ Cat. Royal Canin Ageing 11+ Sterilised is a dry kibble diet suitable for spayed or neutered cats aged 11 and above. Designed for and tested with senior cats, Royal Canin Ageing 11+ Sterilised features easy-to-eat kibble to give your cat an enjoyable mealtime experience. This formula, featuring our HealthyAge7 Complex, provides a precise nutritional blend designed to help maintain seven key dimensions of health and vitality in senior cats: Appetite and weight: Highly palatable and energy-rich to support a healthy appetite and help maintain an ideal weight. Digestion: Contains prebiotic fibres and highly digestible proteins to support healthy digestion. Mobility: Features EPA & DHA and chondroitin to support joint health and mobility. Skin and coat: The inclusion of linoleic acid and zinc helps maintain skin and coat health. Kidneys: Contains high-quality protein and adapted phosphorus levels to support kidney health. Brain and vision: Includes tryptophan, EPA & DHA, taurine,