KONG Water Wubba KONG Wubba is a fun interactive toss and tug toy. Durable reinforced nylon fabric covers two rubber balls - a tennis ball and a squeaker ball beneath. The long tails make it easy to pick up and throw. Dogs love to squeak the wubba and shake the flapping tails back and forth. The wubba comes in Large and X-Large and comes in one piece of an assorted color.