Nature. Research. Results. No matter how far science advances us, we always look to nature to inspire us. Purina ONE formulas combine nature and research for results you can see in your dog. Thanks to a SmartBlend® of high-quality ingredients, including natural prebiotic fibre, Purina ONE Lamb & Rice Formula nurtures your dog’s digestive microbiome along with his whole-body health. It’s also made with real lamb as the #1 ingredient, and the combination of tasty, crunchy bites and tender, meaty morsels will keep your dog coming back meal after meal.