By Nature Pork & Sweet Potato Dry Dog FoodNaturally, nutritionally complete. With added vitamins and minerals. Provides a single source of protein. No poultry, beef or fish. Contains pork, an alternate source of great tasting protein for dogs with adverse dietary reactions to poultry, beef or fish. Whole grains and natural fibers such as ground barley, oatmeal, alfalfa meal and dried chicory root help promote a healthy digestive tract enabling optimal nutrient absorption and utilization. No corn, wheat or soy. Packed with vitamins, minerals and antioxidants to support your pet's natural defenses against the effects of aging, illness, physical and environmental stress. Made with flaxseed, a source of omega 3 and 6 fatty acids, for a healthy skin and coat. Contains chelated forms of zinc, manganese and copper that help promote uptake of these nutrients essential for the immune system.