Barkworthies Medium Big Cheese Chew offers your medium-sized, aggressive chewer a long-lasting alternative to the average chew! Based on a generations-old recipe from the mountains of Nepal, these all-natural, nutritious dog chews are made from yak's and cow's milk that has been processed to remove lactose! Barkworthies Medium Big Cheese Chew is completely digestible, and lasts up to five times longer than a traditional rawhide dog chew! This highly nutritious product can provide many hours of chew time for your dog. These chews are additive, chemical, and preservative free. Their products are all natural, 100% healthy & 100% safe for your dog.