The Royal Canin Breed Health Nutrition Rottweiler Puppy Dry Dog Food is designed to meet the nutritional needs of purebred Rottweilers 8 weeks to 18 months old. This dog food features a unique kibble shape that helps large dogs easily pick up and chew their food. The exclusive complex of antioxidants includes vitamin E, which supports puppy development of the immune system. This dog food provides bone and joint support with optimal levels of protein, calcium, and phosphorus. It also has added L-carnitine for enhanced muscle function.