Zanies® Fishy Fun Green Cat Toy challenges a cat’s natural hunting and stalking instincts. Cats love to roll, pounce, and chase after the plush tubes, and hidden inside each is a furry fish attached by a bungee cord, peeking out to tease cats and entice them to play. When cats let go, the bungee pulls the fish back into the tube. This is a perfect toy for indoor cats.