The Extreme Kong Goodie Bone is made up of Kong's strongest rubber and is designed to withstand tough chewing. This durable toy is priced at $16.99 CAD, slightly more expensive than the "non extreme" option. At first glance this toy appeared to be a great multi-purpose toy for heavy chewers. The bone shaped toy is a great shape for dogs that love to chew and the hollow ends are a great spot to hide treats for long lasting play. However, when put to test, the durability of this product failed to hold up. Although this toy is made to hold up to heavy chewers, Bailey was capable of completely ripping apart this toy. That being said, this is a great multi-purpose toy but it most definitely isn't a suitable toy for heavy chewers as it will not hold up.