FOXPRO diaphragm calls allows you to quickly let out a coyote howl, pup distress or animal distress on your stand. These mouth calls are easy to use and have great volume capabilities. The Predator Combo includes- Coyote Howler call imitates realistic coyote howls, challenge howls, barks and growls. The Cottontail call is tuned for realistic cottontail and rabbit distress. The Coyote Pup Distress call imitates realistic coyote pup distresses and whines.