Natural Pet Collagen Donut dog chews promotes muscle and joint health. These all-natural, protein-packed chews assist with digestion while encouraging healthy skin and coat. This single-count treat also contains natural peanut butter flavoring that dogs adore. Made without chemical additives, hormones, or preservatives, this product is ideal for dogs needing a nutritious and delicious chew. The collagen donut provides a safe and beneficial chewing experience.