Wild Calling! Natural Flavor, Wet Canned Dog Pet Food - Grain and Gluten-Free - 12 x 13 Ounce 96% healthy protein-rich duck. Grain-free and gluten-free with no artificial colors, flavors or preservatives. Rich in dietary fiber, iron and omega fatty acids. Formulated for rotational feeding. Unlike a conventional feeding plan where the same food is served at each meal, rotational feeding involves varying the menu. With added zinc, copper and iron.