Nylabone Rhino Vanilla Scented Bone Dog Chew Toy This rubber dog chew is bouncy and fun for you and your best friend. Not recommended for strong chewers. Rhino bone is a flexible chew toy that dogs love - great for exercise! Wolf Made of premium quality natural rubber - strong and puncture resistant This rubber dog chew is bouncy for added fun for you and your dog Wolf size for medium dogs up to 35-pound