Elephants are usually docile herbivores, but authorities say wild elephant attacks are increasing. Why? The Pittsburgh Zoo's "Elephant Whisperer" Willie Theison brings uncanny insight into their complex minds. In West Bengal, India, he teams up with a courageous "Elephant Squad" in a dangerous mission to relocate problem populations farther away from human beings. In Sri Lanka, Theison and local wildlife officials track down an elusive problem elephant that has been attacking villagers.