Kong Biscuit Ball - a bored canine is a destructive canine, as anyone with a closet full of mangled shoes can attest. The answer put your dog to work. Kong biscuit balls turn passive feeding into active play sessions that satisfy a dog's psychological and intellectual needs as well as his nutritional ones. Made from the same super-durable natural rubber as the classic Kong toy, the biscuit balls have a hollow center and four bone-shaped openings on the exterior to hold treats, bones, or dog food. This unique patented design dispenses rewards as your dog plays and chews. Use sticky foods like peanut butter or soft cheese like glue to make treats harder to remove, keeping dogs happy and busy for hours. Available in 2 sizes: Small - $13.99 Large - $19.99