Don't go wolf hunting without the Rocky Mountain Calls Wolf-Pack Calling System, a two-pack that will lure in this elusive predator. The open-reed Alpha Howler produces the long, eerie moans of alpha males, females in heat, pack location and young pups. Its tone selector helps obtain desired volume, pitch and note changes. The Distemper Predator call will produce all the notes and pitches of distressed animal calls, ranging from small game to the distress yips of a coyote or young wolf pup. Imported.