The latest news and top stories on Khao Kheow Open Zoo. A prominent Thai zoological park, Khao Kheow Open Zoo is located in Si Racha, Chonburi, north of Pattaya. Established in 1978 and part of the Zoological Park Organization of Thailand, it spans 2,000 acres, housing over 8,000 animals from more than 300 species. Its primary mission focuses on wildlife conservation, education, research and public recreation, including breeding endangered species. Notable for its open concept, interactive exhibits, and the famous pygmy hippo Moo Deng, it is the first Thai zoo to join the World Association of Zoos and Aquariums.