The KONG Extreme dog toy represents the most durable strength of KONG rubber. Designed for the toughest of chewers, the KONG Extreme offers enrichment and helps satisfy dogs' instinctual needs. The KONG unique, ultra-durable, natural rubber formula is designed for determined chewers, while the erratic bounce fulfills 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. Supervised use only. Remove all packaging. Discontinue use if damaged. Power chewers: Increase one or two sizes or try KONG Extreme. The KONG Extreme dog toy represents the most durable strength of KONG rubber. Designed for the toughest of chewers, the KONG Extreme offers enrichment and help