See tigers in India, king penguins on South Georgia Island, and black bears in Wyoming.

Inside the Sundarbans, deer traps are everywhere. The danger is twofold—they reduce the number of deer available to tigers, and at the same time pose a direct physical threat to the predators ...

For Gujarat, this has helped reclaim its status as a tiger-bearing state after 33 years. It also makes it the country's only state to have three big cats -- tigers, leopards and lions.