The KONG Extreme Goodie Bone toy engages dogs that are the toughest of chewers and delights in chew sessions. Made from the most durable KONG Extreme unique, natural black rubber formula this bone is designed for determined chewers. The KONG Extreme Goodie Bone also features patented Goodie Grippers™ that turn this entertaining toy into a fun treat dispensing challenge that can be stuffed with your dog’s favorite kibble or stuffed with KONG Easy Treat.