The Kong 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.