Royal Canin Size Health Nutrition X-Small Aging 12+ Dry Dog Food, 2.5 Lb Formula Which Supplies A Selection Of Nutrients To Support Healthy Aging. Contains Epa, Dha, And A Complex Of Antioxidants. Highly Digestible Proteins And Precise Levels Of Various Fibers Help To Regulate And Ease Intestinal Transit. Key Nutrients And Antioxidants To Help Maintain The Heart Health Of Small Dogs. Proven Kibble Technology Helps Reduce The Formation Of Tartar. This Exclusive, Highly Palatable Formula Features A Kibble That Is Easily Rehydrated That Older Small Dogs Can Eat With Ease.