Ultra Chewy Bully Stick Knotted Bones are a healthy natural chew you can trust. A safer alternative to rawhide as it doesn't pose as much of a choking hazard, and a natural aid in cleaning dogs' teeth and gums! Ultra Chewy Naturals proudly offers the healthiest, most natural pet treats available on the market. All Ultra Chewy Naturals bully stick products come from grass-fed, free-range cattle that are free of growth hormones, steroids, and antibiotics. Ultra Chewy Naturals Knotted Bully Stick Bones are slow roasted in our own ovens for a distinct flavor, free of any unsafe additives or preservatives.