Teaches appropriate chewing behavior while offering mental enrichment Perfect for stuffing with KONG treats or KONG pastes for even longer-lasting play. The gold standard of dog toys, provides play, helps reduce boredom and relieves separation anxiety. Unpredictable bounce for virtually unlimited games of fetch, even while you’re away. Recommended by veterinarians, trainers, and dog enthusiasts; used worldwide for over forty years. Made in the USA from KONG Classic ultra-durable, all-natural rubber formula.