Dogs have an instinct to chew. Whether it's a toy, your favorite slippers, or the legs of your sofa, chewing is simply part of their nature. With a KONG Extreme Donut, your pup can satisfy this instinct with appropriate chewing behavior. This toy is made with our most durable natural rubber, allowing it to withstand countless hours of chewing. Unlike nylon, hard plastic, sticks, and bones, rubber doesn't splinter and is gentle on dogs' teeth. The donut shape lets it bounce and roll, making every fetching session lively and fun! If you have a power chewer, you may want to size up one or two sizes. If your dog is an avid chewer, the KONG Extreme Donut makes indoor and outdoor playtime extra fun!