Your cat will have a blast trying to capture the life-like butterfly flying around in this awesome toy! Like all Jackson Galaxy toys, this is one of a kind, awesome! The butterfly is still until the ball is bumped and then it starts fluttering around. The ball is weighted so it never tips over or goes sailing down the stairs 🙂 Runs on batteries. Retail for over $30 plus tax, yours for $10. Please phone 250-768-0666 or reply through this ad.