Exercise and feed your dog with the fully adjustable wobbling Bob-A-Lot. The Bob-A-Lot's dual chambers hold a variety of treats or kibble, is easy-to-fill and easy-to-clean. Customize the difficulty level by adjusting the opening to control the release of treats. Dispenser bobs and tilts on weighted, anti-slip base to provide hours of challenging play as your dog paws, nudges and chases to release treats. Available in large and small sizes.