That's no rattlesnake you hear! It's the Cataction Rattle Ball from JW Pet! This entertaining cat toy has a sparkling rattle yarn ball within a larger ball with hexagon holes! The Cataction Rattle Ball's outer ball is made from durable natural rubber. Plus your cat will love reaching in and trying to bat the inner ball or just pouncing on the whole toy in general. So your cat will be the kind of rattle and roll thanks to the Cataction Rattle Ball! 2 inch diameter.