Zoo: References & Edit History

Article Contributors

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Article title updated for style. Nov 06, 2026
Modified link of Web site: Frontiers - Frontiers in Psychology - Five ways to wellbeing at the zoo: improving human health and connection to nature. May 14, 2026
Add new Web site: PNAS - Zoos must embrace animal death for education and conservation. Mar 20, 2026
Add new Web site: National Center for Biotechnology Information - PubMed Central - Rationale for the Existence of Zoos. Sep 11, 2025
Link added. Feb 27, 2025
Add new Web site: Frontiers - Frontiers in Psychology - Five ways to wellbeing at the zoo: improving human health and connection to nature. Jan 03, 2025
Add new Web site: The Encyclopedia of Science Fiction - Zoo. Aug 30, 2021
Article revised and updated. Feb 05, 2020
Media added. Mar 24, 2017
Added video. Sep 02, 2015
Add new Web site: National Geographic - Zoo. May 26, 2014
Add new Web site: Turner Classic Movies - Friendly Persuasion. May 25, 2014
Add new Web site: Turner Classic Movies - Friendly Persuasion. May 25, 2014
Added image of Jack Hanna and a giraffe. Apr 01, 2010
Media added. Apr 22, 2009
Added new Web site: How Stuff Works - Animals - Zoo. May 29, 2008
Media added. Sep 25, 2007
Article revised. May 17, 2002
Article revised. Feb 15, 2001
Article added to new online database. Jul 20, 1998
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