Rocky Mountain Calls Dirty Dog Howler combines a wide reed, plastic barrel and the Tone Tuner for versatile coyote-callin performance. The volume-enhancing Tone Tuner features an automatic Lip Positioner, so you get it right every time. Place your fingers over its holes for deeper sounds or remove your fingers for louder, high-pitched sounds. Boasting the V.E.T.T. system, this predator call contains a spring tuned to exacting dimensions inside the adapter. This helps create more volume and tone consistency. It also helps stabilize higher notes, which gets raspier barks, and it takes less air to operate. So go ahead, start creating lifelike howls, barks, yips and all the canine sounds needed to lure crafty coyotes into shooting range. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Game Calls.