Arignar Anna Zoological Park , also known as the Vandalur Zoo, is a zoological garden located in Vandalur, to southwest of Chennai, Tamil Nadu, about 31 kilometres from the Chennai Central and 15 kilometres from Chennai Airport. Established in 1855, it is the first public zoo in India. It is affiliated with the Central Zoo Authority of India. Spread over an area of 602 hectares , including a 92.45-hectare rescue and rehabilitation centre, the park is the largest zoological park in India. The zoo houses 2,553 species of flora and fauna across 1,265 acres . As of 2012 the park houses around 1,500 wild species, including 46 endangered species, in its 160 enclosures. As of 2010, there were about 47 species of mammals, 63 species of birds, 31 species of reptiles, 5 species of amphibians, 28 species of fishes, and 10 species of insects in the park. The park, with an objective to be a repository of the state's fauna, is credited with being the second wildlife sanctuary in Tamil Nadu after Mudumalai National Park.