Dick Van Patten'S Natural Balance Sweet Potato & Chicken Meal Formula With Mango Dental Chew For Medium To Large Dogs, 13Oz Helps Reduce Plaque & Tartar; Unique Grooves Encourage Healthy Chewing Action And The Removal Of Plaque & Tartar Easy To Digest; Formulated To Support Easy Chewing And Digestion Helps Freshen Breath; The Mechanical Chewing Action Helps Remove Plaque & Tartar That May Cause Bad Breath With Antioxidant Nutrient; Vitamin C, A Key Antioxidant Nutrient, Is Added To Help Support Immune Function