6LB Greenies Smart Essentials Adult High Protein Dry Dog Food Real Chicken & Rice Recipe. It offers science-backed nutrition with an irresistible taste. This nutritious dog food recipe features real chicken as the #1 ingredient and is designed to help support 6 key areas of your dog's health: digestion, immune system, teeth, skin & coat, bones & joints, andmuscles, including the heart. Greenies Smart Essentials Adult Dry Dog Food is formulated without corn, wheat, soy, or chicken by-product meal and no artificial flavors or preservatives*. Made with natural ingredients plus vitamins, minerals, and nutrients, Greenies Smart Essentials Adult High Protein Dry Dog Food is guaranteed to bring joy to mealtime with tail-wagging flavor.