World Tiger Day: A century ago there were 100,000 tigers. Now there are just 3,900

A century ago, 100,000 tigers roamed the planet. Today, only about 3,900 remain in the wild. So for International Tiger Day, there's no better time to get informed on the endangered species and what conservation methods are being implemented to save them.

For years, the tiger population has been dwindling, largely due to poaching, habitat loss, and retaliatory killings. Just last week, seven dead cubs were found preserved and frozen in the back of a car in Vietnam.