Exercises and feeds your dog at the same time. The large bottom chamber fits up to 3 cups of food - enough for a full meal. Adjustable openings at the top and bottom accomodate most types of dog food and allow you to regulate the difficulty level. Weighted anti-slip bottom makes the toy wobble erratically, enticing your dog to play. Easy-to-fill dual chambers can be filled with treats or kibble. This puzzle toy releases treats as your daw paws, nudges, and chases it.