Large breed young adult dogs, between the ages of 6 months and 2 years, need targeted nutrition as they grow into adulthood. The Nutro Company is the first pet food company to offer natural dog food just for young adult dogs. NATURAL CHOICE® Large Breed Young Adult Dog Food includes real chicken to help build strong muscles, DHA for healthy brain and nervous system development, and naturally-sourced glucosamine and chondroitin for healthy joints. Plus, our SMART STEP® Formula offers optimal nutrition without the added calories that might lead to an overweight adult dog. Help your dog transition from a puppy to an adult while staying lean and strong.