Make mealtime nutritious and delicious for your puppy with IAMS Proactive Health Puppy Food with Real Chicken. Packed with flavor and rich with 22 key nutrients like those found in mother’s milk, this large breed puppy dog food recipe is made with real chicken and contains high quality protein to support muscle growth. Veterinarians recommend IAMS large breed puppy food. IAMS large breed puppy food has balanced nutrition, which aids in a smooth transition to adult dog food. IAMS Proactive Health puppy food also contains Omega-3 DHA for smarter, more trainable puppies. Help keep your puppy healthy, happy, and playful for life with tailored nutrition from IAMS puppy food.