The Lil' Dog comes with two separate mouthpieces: just pop the white one on for long-range calling and the green one on for close-in calling. The detachable horn gives it great versatility. The Lil' Dog is an open-reed style call that reproduces mouse peeps, distress calls of birds, jackrabbits, cottontails, fawns and pup whines. It is also a great pup howler. Blow 'em away with the Lil' Dog.