Natural Cravings All Natural Monster Beef Tracheas Chews are 12 to 16 inches in length and up to 20% thicker than most other trachea on the market. Our Tracheas are single ingredient and unbleached with no added chemicals or preservatives. Trachea is full of Glucosamine and Chondroitin which is good for joint health. The chewing action of our Monster Beef Tracheas can also aid in your dog’s dental health. They are intended as a treat; not a food. Natural Cravings Beef Monster Tracheae are slow roasted to maximize flavor and contain no dyes; chemicals; smoke; or smoky juice. We are happy to support no-kill animal shelters.