Barkworthies Duck Feet are a great, natural source of chondroitin which helps with joint pain and are high in protein. These are dehydrated treats that contain no additives or preservatives. Made and sourced from right here in the United States, Barkworthies Duck Feet chews provide your dog with a safe healthy grain free treat. Made only of all-natural USA duck, these single-ingredient treats also promote healthy teeth and gums through the provided gnawing action! As with all of their products, Barkworthies are additive-free, chemical-free, and preservative-free dog chews. In fact, most Barkworthies products are all-natural, single-ingredient chews, making them healthy and safe for your dog.