Royal Canin Ageing 15+ Cat. Royal Canin Ageing 15+ is a dry kibble diet suitable for cats aged 15 and above. Designed for and tested with senior cats, ROYAL CANIN Ageing 15+ features easy-to-eat kibble to give your cat an enjoyable mealtime experience. This formula also contains increased palatants* for enhanced taste and smell. HealthyAge7 Advanced Complex: This formula, featuring our HealthyAge7 Advanced Complex, provides a precise nutritional blend designed to help maintain seven key dimensions of health and vitality in super-senior cats: Appetite and weight: Highly palatable and more 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 more EPA & DHA* and chondroitin to support joint health and mobility. Skin and coat: The inclusion of linoleic acid, zinc and gamma-linolenic acid (GLA) help maintain skin and coat health. Kidneys: Contains high-quality protein an