BarknBig Bison Trachea Medium Strip (4-6"). The dogs love this chew and the best part about it is it is full of hyaluronic acid which builds glucosamine. Glucosamine aids in hip and joint health. This product comes from clean american buffalo roaming on grasslands in the midwest. We recommend you get younger dogs to start supplementing their hip and joint health as a preventative measure and this product will help. Satisfy hunger and provide extra health benefits. This product is a winner!