It's possible to call lions, but the odds of success are very low. First, of course, call where a cat can hear you. That's a challenge, since lions are widely scattered and have large home ranges. Any cats that do hear you may not approach, depending on their mood or how hungry they are. Lions are accustomed to killing deer and are not as opportunistic as coyotes and bobcats, which hunt smaller prey. Murry Burnham, a legendary Texas hunter whose father invented the predator call, has called only a few lions after a lifetime of trying, mostly with a jackrabbit distress call. On the other hand, he's called in thousands of coyotes, bobcats and other predators.