The JW Pet Treat Tower is a cutting-edge playful learning activity and treats dispensing toy. This playful learning activity toy has a tough nylon frame with creatively styled openings. Suitable for a variety of treats. Simply insert the treat in the top and they randomly come out the bottom as your dog works to release them. The difficulty level can be adjusted as your dog learns. Holds up to rugged play and the difficulty level can be adjusted to make it more challenging as your dog learns. Available in two sizes to accommodate most size dogs. The small size is recommended for small and medium size dogs while the large size is recommended for medium and large size dogs.