Barkworthies Beef Rib Bones are great nutrient-dense chews for small to medium-sized dogs. Barkworthies bones are baked with pieces of meat and tendon still attached, so your pup is in for a terrifically appetizing time! Barkworthies Bones provide your dog with a highly digestible source of calcium. Calcium intake is crucial for your dog's body to maintain strong bones and teeth. These bones are also rich in iron and zinc which helps your dog's body fight off infection and maintain a healthy immune system. Barkworthies bones are hearty, durable chews that will give your dog hours of chewing satisfaction as well as cleaner teeth. Most Barkworthies' all-natural dog treats and chews are completely preservative-free and additive-free. Please note that this product is not for human consumption. Please supervise your pet while giving a treat or chew and dispose of properly if it becomes a choking hazard or develops sharp edges.