Merrick Grain-Free Real Duck + Sweet Potato Dry Dog Food delivers allergy-friendly nutrition with a grain-free recipe that features real, deboned duck, along with sweet potatoes, peas, apples, blueberries and more. Formulated with vitamins and minerals for complete and balanced nutrition, it also contains high doses of glucosamine and chondroitin for increased mobility, along with high levels of Omega-3 and 6 fatty acids for healthy skin and a shiny coat.