I volunteered to work for a lemur conservation group in Madagasca. It was the most gratifying experience of my life. Madagasca is home to all kinds of unique plants and animals, but the lemur is the most famous. Lemurs are actually primates, like gorillas and chimpanzees, and are the oldest living primates in the world. Unfortunately, a shocking new study has found that Madagasca's lemurs have become the most endangered mammals on the due to illegal logging.