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 unpredicatable bounce for games of fetch. The Kong is perfect for stuffing with kong treats. Size GuideSmall 1-10 kg - Bichon, Chihuahua, Fox Terrier, Lhasa Apso, Maltese, Poodle (toy), Schnauzer (Min), Shih Tzu, Westie, Yorkshire TerrierMedium 5-15 kg - Beagle, Bichon, Boston Terrier, Brittany, Cocker Spaniel, Dachshund, Fox Terrier, Jack Russell Terrier, Lhasa Apso, Poodle (toy), Pug, Schnauzer (min. Read more…), Schnauzer(std. ), Schnauzer (giant), Sheltie, Shih Tzu, Westie, Yorkshire TerrierLarge 15-30 kg - Basset Hound, Boxer, Brittany, Chow Chow, Cocker Spaniel, Collie, Doberman, Dachshund, Dalmation, German Shepherd, Golden Retriever, Greyhound, Irish Setter, Jack Russell Terrier, Keeshond, Labrador Retriever, Poodle (std. ), Rhodesian Ridgeback, Samoyed, Schnauzer(std. ) , Schnauzer (giant), Scottish Terrier, Sheltie, Siberian Husky, Springer Spaniel, WeimaranerSizes :Small : H x W x D : 6. 5" x 4. 0" x 1. 8"Medium : H x W x D : 7. 5" x 11. 3" x 20. 3"Large : H x W x D : 8. 5" x 5. 5" x 2. 8"