Chuckit! Dog Fetch Toy Whistler Ball Noisy Play Fits Launcher Medium 4 Balls

All of the Chuckit! balls are specifically designed for the most demanding use by a growing population of fetch enthusiasts. Each ball is compatible with the Chuckit! launchers, so that you do not have to bend down and pick up a slobbery ball. Whistler Ball - Designed for the most demanding use by a growing population of fetch enthusiasts, this ball twitters and whistles in flight.