By Nature Adult Dry Dog FoodHelp keep your pet feeling young with a powerful mix of vitamins, minerals and antioxidants to promote a strong immune system. Formulated to help support your pet's natural defenses against the effects of aging, illness, physical and environmental stress. Chicken and lamb make a great tasting protein combination that provides more of the building blocks of lean muscle. Highly digestible fibers help promote a healthy digestive tract enabling optimal nutrient absorption and utilization. Vitamins, minerals and antioxidants support your pet's natural defenses against the effects of aging, illness, physical and environmental stress. Taurine for a healthy heart and eye function. Contains absolutely no meat by-products, by-product meal, white rice, brewers grains, grain by-products, artificial flavors, colors or preservatives.