Purina Pro Plan Sport Development 30/20 Chicken & Rice High Protein Puppy Food, 4-lb bag; Support your growing puppy with fine-tuned dry puppy food for healthy development, strength and endurance with Purina Pro Plan Sport Development 30/20 Chicken & Rice High Protein Puppy Food. This delicious Purina Pro Plan puppy food is a chicken dog food developed for athletic puppies like yours. This dog food with glucosamine supports joints and cartilage while nutrients like calcium, phosphorus and essential vitamins promote healthy bone growth. Plus, it promotes concentration, problem-solving and trainability to help puppies excel in the field, the show ring, and at home during daily exercise. Chicken is the #1 ingredient in this active dog food with high-quality protein to build lean muscles and antioxidants for dogs for immune health. Unlock your puppy’s athletic potential with Purina Pro Plan Sport for puppies. The dog food kibble in every bag of Purina Pro Plan Sport dog food is rigorously tested for quality and safety and manufactured in Purina-owned U.S. facilities.