Hold on tight, the Tornado Toy is ready to turn you dog's play time upside down! The Nina Ottosson Interactive Dog Tornado Toy is a fun interactive toy that rewards dog's with treats for their braininess. The removable pieces turn the revolving sections to reveal hidden treats. With many variables, you can increase the level of difficulty as dog's improve their skills. Soon they will learn to dislodge the pieces and turn the Tornado to access the rewards. The tough, durable plastic is easy to clean by rinsing with water.