This is a little out of line here but it works for me. I mounted a loud speaker on the front of my Suzuki Samurai. I wired it into the radio and tape player. The rear speaker control operates the loud speaker. I drive down the river bed after dark with no lights on playing a tape of rabbits or baby animals. Partner uses a red spotlight. We get Foxes, Lynx, Coyotes, Wolves, and Bears. Other times I park out in a small bunch of brush, out on the river bed. Put a chair up on top of the Sammy, plug in a baby Moose tape, and let it play as I sit on top of the Sammy. Have called in Bears and Wolves using this method.