Made from 100% natural bone that has been air dried to lock in the goodness, the Hollings Filled bones are filled with a delicious selection of specially selected meat fillings to satisfy even the fussiest of dogs. Long lasting and tasty, the bones help provide mental stimulation, reduce boredom and promote calmness. Available in Beef, Venison or Lamb and Rice. As a natural bone, this product could splinter. Dogs should be supervised at all times when enjoying this product.