StarMark Bob-A-Lot Large The Bob-A-Lot exercises and feeds your dog at the same time! Dogs of all sizes are able to manipulate the toy to get food or treats out. The large bottom chamber fits up to three cups of food- enough for a full meal! Adjustable openings at the top and bottom accommodate most types of dog food and allow you to regulate the difficulty level for your dog. The weighted anti-slip bottom makes makes the toy wobble erratically enticing your dog to play. Size: 9.5'' height 6'' diameter at larger point Holds Variety of Treats and Kibble Easy-to-fill, easy-to clean dual chambers allow you to fill with treats or kibble. Easily Customize Difficulty Level Adjust opening to control release of treats. Bobs and tilts on weighted, anti-slip base. Provides Hours of Challenging Play Puzzle releases treats as your dog paws, nudges and chases. Be sure to add me to your favorites list!