Got a serious chewer on your hands? The KONG Extreme dog toy represents the most durable KONG available and is recommended by veterinarians, trainers, dog enthusiasts and Staffy owners worldwide. Designed for tough chewers, this KONG offers enrichment and helps to satisfy the instinctual need of dogs to chew. Made from an ultra-durable, all-natural rubber formula, the KONG Extreme also has an erratic bounce, making it perfect for fetch and playtime as well. Stuff with peanut butter or KONG treats and fillings to keep your dog occupied and help beat boredom and separation anxiety. You can even freeze fillings inside for a longer lasting challenge!