Canine NaturalsⓇ Hide Free Chews are a healthy and delicious alternative to rawhide products. Some brands or product names imply their chews are hide-free, when in fact “collagen” derived from rawhide or some form of animal hide is used in their process. Why? Because animal hide provides a longer chew time for a lower cost as a by-product of other production, which can be difficult for your dog to digest. We proudly state 100% Rawhide Free directly on our packaging. With the 40 pack of our 5” beef chew sticks, they'll still enjoy plenty of healthy, safe, and satisfying chew time.** Our limited ingredient recipe is lab proven to be up to 400% more digestible than rawhide based products.* These natural dog treats are also ideal for dogs with ingredient intolerances since our recipe is gluten-free, made with real beef, and contains no chicken or poultry products. Additionally, our healthy chews contain zero artificial flavors, colors, or filler ingredients like corn, wheat, or soy. More than just a tasty treat, the long-lasting chew helps clean your dog's teeth and gums while satisfying their natural chewing instinct, giving your pet the satisfaction and flavor that rawhides can't! With great flavors and real ingredients, Canine NaturalsⓇ chews are a healthy and rewarding treat that's sure to please. *In Vitro Hide Free Study Performed by Dr. Maria Godoy at the University of Illinois. **We recommend buying a chew that is larger than your dog's mouth. A chew that is larger than your dog's mouth helps ensure they chew and work on the product versus just swallowing it.