The 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. The Hot Dog is super loud making it a great locator call. 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. The Hot Dog is designed specifically to Speak The Language of the coyote.