Nutro Natural Choice Chicken and Rice Large Breed Formula uses high quality Australian chicken as the primary ingredient and single source of protein for energy and the development of healthy muscles. Chicken is also a natural source of glucosamine, the nutritional building blocks of cartilage to support strong and healthy joints. Formulated with advanced antioxidants, including lutein, vitamins C and E, and taurine to support a healthy immune system and the maintenance of overall cellular health. Enriched with nourishing blend of linoleic acid, zinc, vitamin B and biotin, that assists in the maintenance of healthy supple skin and soft, shiny coat. The mechanical action of chewing Nutro kibble is a natural way to promote good oral health.