A few years back one of my dads buddy was bow hunting for elk in Idaho and while trying to call in a bull he had heard with a cow call he got the supprise of his life when a lion came in on him full bore with only a bow in his hand he booked it out of the woods back towards the guy he was hunting with, once the cat got a look at both of them it took off. Point of the story is that cats CAN be called in if every thing is perfect, in this case the cat was probly already stalking the herd of elk that my dads buddy was hunting...