KONG Extreme Dog Toy - Fetch & Chew Toy - Treat-Filling Capabilities & Erratic Bounce for Extended Play Time Most Durable Natural Rubber Material - for Power Chewers - for Large DogsInstinctual Needs: The KONG Extreme black rubber toy helps satisfy dogs' instinctual needs and provides mental stimulation; toy helps solve chewing, teething, boredom, crate training, digging, barking, and more Enticing Chew Toy for Dogs: This unique toy has an erratic and unpredictable bounce, keeping all breeds of dogs engaged and entertained during interactive play sessions Treat Filling Capabilities: The hollow interior allows for stuffing with