Chomp into fun with all-new Bottle Crusherz! They are just like our popular Happy Hour Crusherz, but wilder! The Bottle Crusherz Walrus is lined for durability and features a hook and loop closure that helps prevent your dog from removing the water bottle. Each Bottle Crusherz toy comes with a free water bottle and a *reusable squeaky cap so you can refill it with empty water bottles to keep your dog crunching for hours. *Reusable squeaky cap works with most water bottles (Arrowhead, Aquafina, Nestl).