Primos has teamed up with Randy Anderson to bring you the Howler pack. These mouth calls have been designed to 'Speak The Language' of the coyote. The Sonic Dome predator mouth call is used to create higher pitched howls. The Double Howler predator mouth call has a deeper pitch, which is perfect for making the coyote's lonesome greeting howl. Both calls make the full range of coyote howls and distress calls.