Polar Bear at the Bronx Zoo, May 2012

The Bronx Zoo is located in the Bronx borough of New York City, within Bronx Park. It is one of the world's largest metropolitan zoos, with some 4,000 animals representing about 650 species from around the world. The zoo comprises 265 acres (107 ha) of park lands and naturalistic habitats, through which the Bronx River flows.

The Bronx Zoo is part of an integrated system of four zoos and one aquarium managed by the Wildlife Conservation Society (WCS), and is accredited by the Association of Zoos and Aquariums (AZA).

Fordham University owned the land which became the Bronx Zoo and New York Botanical Garden. Fordham sold it to the City of New York for only $1,000 under the condition that the lands be used for a zoo and garden; this was in order to create a natural buffer between the university grounds and the urban expansion that was nearing. In the 1880s, New York State set aside the land for future development as parks. In 1895, New York State chartered the New York Zoological Society (later renamed to Wildlife Conservation Society) for the purpose of founding a zoo.

The zoo (originally called the Bronx Zoological Park and the Bronx Zoological Gardens) opened its doors to the public on November 8, 1899, featuring 843 animals in 22 exhibits. The first zoo director was William Temple Hornaday. Heins & LaFarge designed the original permanent buildings as a series of Beaux-Arts pavilions grouped around the large circular sea lion pool In 1934, the Rainey Memorial Gates, designed by noted sculptor Paul Manship, were dedicated as a memorial to noted big game hunter Paul James Rainey. The gates were listed on the National Register of Historic Places in 1972.

As of 2010, the Bronx Zoo is home to more than 4,000 animals of 650 species, many of which are endangered or threatened. Some of the exhibits at the Bronx Zoo, such as World of Birds and World of Reptiles, are arranged by taxonomy, while others, such as African Plains and Wild Asia, are arranged geographically.

Text from: en.wikipedia.org/wiki/Bronx_Zoo