Watch The Last Lions trailer - and make a difference for lions! For every trailer viewing on YouTube, National Geographic will contribute $.10* to lion and big cat conservation in Botswana. Watch as many times as you want, and share with your friends and family. Let's get to 1 million views together!

* Contribution maximum is $100,000. For more information on National Geographic's conservation efforts all over the globe, go to causeanuproar.com.