The KONG Dental with Rope Extreme rubber dog toy features patented Denta-Ridgesª and is designed to reward appropriate chewing while supporting a dog's instinctual needs. Made from the KONG Extreme rubber formula, this enticing chew toy is designed to last. The 100% cotton rope rewards appropriate chewing behavior while massaging teeth and gum. The unique Denta-Ridges can be filled with peanut butter or KONG Easy Treat to keep the engagement high.