Duck

Duck is a great source of protein that is low in saturated fat, is a rich source of most B vitamins, and also has useful amounts of phosphorous and potassium. Duck is an excellent source of cancer-protective B vitamins. Niacin (Vitamin B3) aids in controlling glucose levels in the body as well as converting protein, fat, and carbohydrates into usable energy. Pyridoxine (Vitamin B6) supports energy metabolism and cardiovascular health. Duck contains zinc and selenium, antioxidants that help boost the immune system. Selenium also helps maintain normal thyroid function. Duck also has omega-3 fatty acids which helps provide your dog with a healthy skin and coat. 

Since Duck is a protein source that is naturally higher in fat, it is excellent for energetic dogs and pets wanting to gain weight. If your dog is overweight or has a history of pancreatitis, Duck should only be fed in moderation.