Barkworthies Smoky Shin Bones are baked with pieces of meat and tendon giving them a natural flavor and making them a highly appealing dog Treats! These bones are as natural as they come. Shin Bones are full of nutritious marrow, providing your dog with a highly digestible source of calcium. Calcium intake is crucial for your dog’s body to maintain strong bones and teeth. Barkworthies Smoky Shin Bones are also high in Iron and Zinc which helps your dog's body fight off infection, maintain a healthy immune system, provides energy to help support brain functions and gives them a zest for life! Barkworthies chooses to bake their Shin Bones to rid the product of any possible bacteria. Barkworthies Smoky Shin Bones are extra-long lasting Treats for your medium to large dogs and a durable dog Treats for your aggressive Treatsers. Barkworthies Smoky Shin Bones are hearty, durable dog Treats that will give your pet hours of Treats time as well as cleaner teeth! These bones are FDA approved and sourced from Brazilian cattle.