Red Kong - rubber chew toy packs a huge play value into a compact package. Legendary among dog lovers for their strength and durability, Kong toys are the answer to a busy pet owner's prayers. Dogs were made to hunt, chase, and gnaw, and denied a way to satisfy these natural urges, they can turn into barkers, diggers, problem chewers, or worse. Recommended by vets and trainers for dogs with separation anxiety, the Kong has a hollow interior that's ideal for stuffing with treats. Use peanut butter or soft cheese like glue to keep biscuits inside, and extracting the contents becomes a "hunt" to keep any pooch happy and busy all workday long. Dogs love the toys' goofy, unpredictable bounce and can chase, fetch, and play for hours. Chewing Kongs even helps promote strong jaws, clean teeth, and general oral health. Available in 4 sizes: Small – $6.19 Medium – $8.69 Large – $10.09 Extra Large – $15.79