Barkworthies Beef Cheek Roll Dipped in Peanut Butter Dog Treat LGBarkworthies Beef Cheeks are collagen based chews sourced from free range, grass fed cattle. Collagen is a naturally occurring protein and is one of the key components of all connective tissue. It promotes mobility and flexibility, helps relieve joint pain and stiffness, supports healthy skin and coat, and boosts digestive health. These all natural, long lasting, collagen chews are wrapped in real chicken for an extra delicious treat sure to keep your