Give your growing puppy targeted nutrition with Purina Pro Plan Puppy Large Breed Sport Development 30/18 High-Protein Puppy Food! Made with real chicken as the number one ingredient, this delicious dry food promotes your pooch’s concentration, problem-solving ability and trainability. Featuring brain-nourishing nutrients, including DHA, EPA, taurine, choline and vitamin C, this large-breed puppy food also supports a healthy growth rate and age-appropriate strength and endurance. Glucosamine helps maintain healthy joints and cartilage, while nutrients, including calcium and phosphorous, help support bones.