Purina Pro Plan is dedicated to helping a dog's full potential shine through, naturally. That's why our Natural Formulas are created for outstanding nutrition, delivered through high-quality, natural ingredients, plus essential vitamins and minerals. And nothing less. Purina Pro Plan Natural Adult Grain Free Tuna & Egg Formula features Tuna as the #1 ingredient along with other sources of high-quality protein. It also does not contain any poultry by-product meal and has no added artificial colors, flavors, or preservatives. This formula is gentle on the digestive system and for those who prefer no grains, it is made without grains or soy. Omega-6 fatty acids and zinc help nourish your dog’s skin and promote a healthy coat, while the antioxidants help support a healthy immune system. Purina Pro Plan Natural Adult Grain Free Tuna & Egg Formula provides 100% complete and balanced nutrition for adult dogs and is proudly manufactured in Purina-owned U.S. facilities. Grain Free Our high quality, grain free diet can help a dog reach his full potential. Using alternative sources of carbohydrates like cassava root flour in place of grain, plus additional select ingredients, our Purina Pro Plan Natural Grain Free Adult Small Breed Tuna & Egg Formula is a natural way to help your small dog thrive.