Holistic and Hypoallergenic Suitable for all breeds & Life Stages Complete balanced diet for optimal health Natural source of vitamins & minerals Naturally preserved Natural control of intestinal and external hygiene Free From Cereals Duck is rich in iron and it provides dogs with a lean, easy-to-digest protein source. Duck is also a great source of amino acids, which helps to support strong muscles.Turkey is a lean, white meat that helps dogs build muscle. It is also a highly digestible protein source for dogs. Great for senior dogs and dogs that need a lighter diet. Sweet Potato: They are one of the best dietary sources of vitamin A, which promotes healthy skin, coat, eyes, nerves, and muscles in dogs. Rich source of fibre, vitamins C and B6, potassium, calcium, and iron, among many other essential vitamins and minerals.