IAMS PROACTIVE HEALTH Smart Puppy Large Breed Dry Dog Food is veterinarian recommended and made with real ingredients. Our recipe starts with farm-raised chicken and includes wholesome grains and veggies. It’s tailored to the big dogs—large puppies 50-120 lb. at maturity. Plus, our quality, easily digestible ingredients provide your puppy with a strong immune system, healthy skin and coat, and strong bones. Best yet? Omega-3 DHA makes your puppy even smarter. Look for the IAMS difference.