Purina Pro Plan 34 lb. Adult Large Breed Dry Dog Food is specially formulated with guaranteed levels of EPA and natural sources of glucosamine to support healthy joints, cartilage, and mobility. Made with real chicken as the first ingredient, it provides protein, an essential nutritional building block for your dog's body. The highly-digestible formula supports optimal nutrient absorption, while the 26% protein and 12% fat content helps maintain an ideal weight and body condition.