BENEFITS:– Single ingredient– Odorless– Promotes hip and joint health ABOUT:BarknBig Bison Trachea Canoe Large ranges in length from 4-6″ or 10-13″. Trachea is a nutritious part of the Bison that is high in hyaluronic acid which aids in glucosamine production in your dog. Our premium Bison is free-range, grass-fed, 100% USA bison.