No matter if you have a large, medium or small dog, with a Kong Tenni Duo, you will have a great time. Tenni Duo is an interactive dog toy created from 2 bouncy tennis balls held together by durable nylon fabric. The fabric in the middle makes this dog toy easy to pick up and throw and the weight on either end of the toy makes it fly farther than other fetch toys. Each tennis ball contains a squeaker to grab your dog's attention. You will spend hours playing fetch with your dog. Available in Small, Medium and Large.