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Support your large breed puppy with tasty fine-tuned nutrition for age-appropriate strength a healthy growth rate and increased endurance with Purina Pro Plan Large Breed Sport Development 30/18 High Protein Puppy Food. Crafted for athletic large breed puppies this Purina large breed puppy food promotes concentration problem-solving and trainability for excellence in the field the show ring and at home. Plus this large breed puppy dry dog food features real chicken as the #1 ingredient and high-quality protein to build lean muscles and a healthy heart. Nutrients such as calcium phosphorus and essential vitamins promote healthy bone growth while glucosamine supports healthy joints. It also has antioxidants for dogs to support developing immune systems. Try this puppy food today risk-free and be confident in the quality and safety of this dry dog food for puppies because every Purina Pro Plan formula is proudly manufactured in Purina-owned U.S. facilities.