KONG Signature Crunchs irresistible sound entices dogs to play and keeps them tugging, fetching and thrashing for long bouts of instinct-satisfying, crunchy fun. Its length makes natural shaking extra rewarding, while the all-time dog favorite tube sock exterior stretches for long-lasting fun. KONG Signature Crunch Puppys irresistible sounds engage puppies natural play instincts giving them an outlet for tugging, fetching and thrashing fun. The tube sock exterior provides a soft chewing experience and rewards appropriate chewing and play behavior. The knots extend the engagement by providing another delightful chew-filled experience. Instinct-satisfying. Crunch sounds engage puppies natural play instincts giving them an outlet for tugging, fetching and thrashing. Soft chewing experience. Rewards appropriate chewing and play behavior.