General
The Catapult™ cat toy turns a simple doorknob into a mouse-chasing playground. Just slip it over any standard doorknob and watch the fun begin—for both of you! A multi-colored fuzzy mouse with feathered tail is attached to a 24" elastic cord, bobbing and bouncing as your cat swats and grabs.
Hangs on any standard doorknob.
Rubber feet and backing protect door, keep the unit in place and decrease noise.
From JW Pet: Exercise for your cat's body and mind™.