Royal Canin Size Health Nutrition Large Breed Aging 8+ Dry Dog FoodWith countless dog food options out there that feature formulas focused on ingredients, how do you know what nutrition is right for your pet? No matter how big or small your dog is, Royal Canin has a right sized diet, made with the precise amount of nutrients needed for every stage of their magnificent long life. Large breed dogs are treasured for being hard working animals and loyal family companions. But as they age, their nutritional needs change.