Bamboo Lemur (1 of 2) (IMAGE) Duke University Caption Putting a figure on the number of endangered lemurs left in the wild isn't easy, but researchers say one clue might help: the plants they rely on for food. Credit Photo by David Haring, Duke Lemur Center Usage Restrictions Please credit David Haring, Duke Lemur Center License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.