Zoo

A zoo (from the term "zoological garden") is a managed facility where live animals of various species are kept and displayed to the public. The animals are housed in constructed enclosures designed to simulate their natural conditions, and are provided with food, water, and medical care. Zoos are typically operated by government agencies, universities, non-profit organizations, or private companies.

Zoo operations generally fall into four categories: display and education, public education, scientific research into animal behavior and health, and conservation of endangered species to ensure their survival. Zoo collections regularly exchange animals and genetic information to maintain genetic diversity.

History

Collections of animals kept by rulers and nobility existed in ancient times, particularly in the Middle East, Egypt, China, and Europe. These collections, commonly known as menageries, demonstrated power and wealth but were not open to the general public. In the eighteenth and nineteenth centuries, Europe saw the emergence of public zoos organized around biological science. From the twentieth century onward, enclosure design shifted from small cages to larger spaces designed to replicate natural habitats.

Management and care

Animal care is managed by staff including zookeepers, veterinarians, and nutritionists. Facilities employ environmental enrichment practices, providing animals with tasks, hidden food, and objects that encourage their natural behavior and reduce stereotypic behavior resulting from captivity. Many countries have regulations defining enclosure size, visitor safety, and species record-keeping.

Species conservation

Some zoos participate in managed breeding programs designed to prevent inbreeding. Animals bred in captivity are sometimes returned to the wild, though this requires suitable habitat and long-term support. Zoos also fund wild conservation projects and research into disease and reproduction.

Controversy

The debate over zoos centers on whether the restriction of animal movement is justified by educational and conservation benefits. Some animal rights groups argue that large, wide-ranging species such as lions and dolphins cannot be adequately cared for in captivity. Conversely, supporters point to breeding programs and funding for wild conservation. In recent years, many facilities have shifted toward integrated facilities focused on conservation, while others have reduced displays of unsuitable species.