A herd of elephants living in Taman Negara National Park in Malaysia's central state of Pahang is seen in this undated handout photo released by New York-based Wildlife Conservation Society (WCS) January 16, 2009. An internationally recognised technique of counting dung has led to the discovery of the largest-known population of endangered Asian elephants living in Southeast Asia, researchers said Friday. REUTERS/Wildlife Conservation Society/Simon Hedges/Handout (MALAYSIA). NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. MALAYSIA OUT. NO COMMERCIAL OR EDITORIAL SALES IN MALAYSIA.