The first time my human hung the Fling-Ama-String on the doorknob and turned it on, I was mesmerized and mystified for a moment. I had never seen anything quite like it. Then I sprang into action. I jumped. And pawed. And snatched. And grabbed. And won! What fun! The string – my nemesis – appears and disappears quickly. But I, the master kitty, am too clever for it, as I can anticipate when it will be most vulnerable to my full-on claw and tooth attack. The Fling-Ama-String includes a high-speed option for advanced hunters who want to take the game to the next level. For more sedate or older cats, the human can start and stop the device so that even the most mellow cat can join in the playfulness.