Royal Canin Large Aging 8+ Dry Dog Food is tailored to support your big senior dog’s vitality. An exclusive complex of antioxidants supports cellular health to help reduce the signs of aging. Precise nutrients keep large bones and joints healthy and strong to help your aging dog stay active. High-quality proteins and a balance of fibers help your dog digest food easily for digestive health. Plus, this highly palatable senior dog food kibble is rehydratable: Mix in warm water for an easy-to-chew meal your dog will love to eat.