If you see this bear dog toy in the wild, experts say dogs should roll over and show him their bellies. Black Bear Bones is made of natural rubber and has all the playtime necessities with a wacky wobble base that keeps him rolling, bouncing, and spinning. Just be sure to squeak it loudly in case there are cubs nearby. Special Features: - Hidden Toy Inside! Rip through the fabric to reveal a hidden toy underneath! Materials: Polyester, Rubber