The KONG Extreme Dog Toy represents the durable strength of KONG rubber. Designed for the tough chewers, the KONG Extreme offers enrichment and helps satisfy dogs’ instinctual needs. The KONG, ultra-durable, all-natural rubber formula is designed for determined chewers, while the erratic bounce fulfils a dog’s need to play. Want to extend play time? Be sure to stuff with tempting bits of kibble and entice with a dash of peanut butter. Add to the fun by adding KONG snacks and top with KONG easy treat. Stuff and Freeze for a longer-lasting challenge.