Bully Sticks are 100% all natural chews and come from free range, grass fed bulls. They are easy for dogs to digest, and they clean teeth by reducing tartar. They are low in fat, high in protein, and have no chemicals or preservatives. Many Bully Sticks are dried or baked horizontally and then smoked to hide the ammonia smell. Our Straight Bully Sticks are dried vertically which drains the bully stick for a low odor product. All of our products are approved by the USDA and FDA.