Chiang Mai Zoo is a 200-acre (81 ha) zoo located on 100 Huay Kaew Road, Chiang Mai, Thailand, just north of Chiang Mai University. It is the first commercial zoo in Northern Thailand, and was established on 16 June 1977.
Chiang Mai Zoo is privately operated and includes a large variety of animals. In addition, it provides two large aquariums. On 28 October 2008, an aquatic tunnel with a length of 133 metres (436 ft) (the World's longest tunnel aquarium) was opened to the public. It also has a marine aquarium, which is the largest one in Asia.The 2-kilometre (1.2 mi) Chiang Mai Zoo Monorail was opened in 2005. It takes visitors around the premises to four stations. The trains are air conditioned and can transport 50–70 passengers.
Overall, 400 animal species are represented in the zoo including koalas, Humboldt penguins, Cape fur seals, the only rhino in Thailand, hippos, flamingos, giraffes, zebras, ostriches, camels, lions, tigers, Barbary sheep, Malayan tapir, and many types of reptiles.The zoo is also home to two elephants and three giant pandas.
Giant pandas Lin Hui and Chuang Chuang arrived at the zoo on 12 October 2003, and are on 10-year loan from China. Their daughter Lin Bing was born at the zoo on 27 May 2009, and will be returned to China when she is two years old. Lin Bing is one of just a few giant pandas born in captivity outside of China.