Tigers are facing a ruthless predator: human poachers. Controlled by well-funded and well-organized crime rings, poachers are hunting and killing tigers to sell their body parts on the black market.

This deadly trade is leaving its mark, with tiger populations dwindling and winking out across parts of Asia where, until recently, they were common.

In this video, find out how WCS is stepping in to stop the slaughter of the world's 3,500 remaining wild tigers before it's too late—and what you can do to help.