Move It Up: Your pet can see food inside the toy through transparent shell. Then your pet will catch the toy and play with it, letting your pet get the full exercise prevent getting too. Challenging and Playable: Your pet has to find a way to get food out of the hole. The holes on the toy will give off the smell of the food to attract the attention of your pet. Safe and Durable: Made from non-toxic and odorless ABS material, your furry friend feel free to bite it since it is very safe and durable. Built-in Bell: The toy with tumbler shape comes with a built-in bell. When it makes a sound, it will effectively attract the attention of your pet for playing. Make Your Pet Smarter: It will exercise your pet's hunting ability well and make your pet more agile and wit.