This Primos Hot Dog is one bad dog. Its mouthpiece detaches from the horn to sound like two distinctly different coyotes. This will give you the edge during mating season and battling over territorial boundaries. It's also versatile enough to create distress calls of birds, cottontails, jackrabbits, pups, fawns and deer. This large howler's mouthpiece alone creates smooth sounding howls. The horn adds rasp and volume to your calling. It includes an instructional mini CD.