Unused. Weighted base that tips to release treats or kibble. Please note that the product information displayed is provided by manufacturers, suppliers and other third parties and is not independently verified by Petco.Full disclaimer here. The KONG-shaped Wobbler is an action-packed treat and food dispensing toy. It sits upright until pushed by a dog's paw or nose and then periodically dispenses tasty rewards as it wobbles, spins and rolls. The unpredictable movement keeps the toy challenging, even for seasoned Wobbler users. The Wobbler can also be used as an alternative to a dog bowl to help slow and extend mealtime while providing exercise for your dog. Unscrews for easy filling and cleaning. - Made of food-grade, high-strength polymer - Dishwasher safe - Top screws off from bottom for easy filling - Made in the USA