KONG Extreme is the KONG Classic dog toy for the dog with a powerful chew. This dog toy will help to reduce boredom and separation anxiety for the most powerful chewers. It is made from ultra-strong, ultra-durable, black rubber compound, which gives the toy and unpredictable bounce for games of fetch. The KONG is perfect for stuffing with KONG treats.Key Benefits Mentally stimulating toy, offering enrichment by helping satisfy dogs instinctual needs KONG black rubber formula is specifically designed for power chewers Unpredictable bounce for games of fetch Great for stuffing with KONG Easy Treat, Snacks or Ziggies Recommended worldwide by Veterinarians, Trainers, and dog enthusiasts All-Natural rubber and proudly made in the USA Freeze with your dog's favourite tastes for extended playSize Guide Small 0-10 kg Medium 5-15 kg Large 15-30 kg