ZOO

A zoo (short for zoological garden; also called an animal park or menagerie) is a facility in which animals are housed within enclosures, cared for, displayed to the public, and in some cases bred.

The term "zoological garden" refers to Zoology , the study of animals. The term is derived from the Greek ζώον, 'zoon', "animal," and the suffix -λογία, '-logia', "study of". The abbreviation "zoo" was first used of the London Zoological Garden , which was opened for scientific study in 1828 and to the public in 1847. In the United states alone, zoos are visited by over 181 million people annually.