Provide your large breed puppy the nutrition he needs with Purina ONE Plus Natural Large Breed Puppy Formula dry dog food with added vitamins, minerals and nutrients. Real chicken is the number 1 ingredient in this high protein puppy food, which also contains rice for your puppy's delicate stomach. Purina ONE Plus dog food for puppies contains no artificial flavors or preservatives and 0 percent fillers, so every ingredient has a purpose. Natural sources of glucosamine for dogs in Purina ONE large breed puppy food help support his growing joints, and high protein helps support his strong, growing muscles, including a healthy heart. This Purina ONE dry puppy food contains DHA, a nutrient found in mothers' milk, to support vision and brain development, and a blend of four antioxidant sources helps promote a strong immune system. Protein-rich, tender and meaty morsels and crunchy kibble with calcium combine to deliver a taste and texture he's sure to love along with strong teeth and healthy gums.