Fill your large breed dog's bowl with the wholesome goodness of Purina ONE +Plus Natural Large Breed Formula With Added Vitamins, Minerals and Nutrients adult dry dog food. Real chicken is the first ingredient in this high-protein dog food recipe, and the unique combination of tender, protein-rich meaty morsels and crunchy kibble delivers the tastes and textures he loves. Our large breed adult dog food is high in protein to help support strong muscles, including a healthy heart, and it delivers 100 percent complete and balanced nutrition for whole-body health. Plus, this natural dog food with glucosamine helps maintain an ideal body condition and joint health for dogs, and it contains no artificial flavors or preservatives and zero fillers, so every ingredient has a purpose. We include four antioxidant sources in our adult large breed dog food for a strong immune system, and calcium along with the crunchy kibble supports strong teeth and healthy gums.