- Michigan Zoos and Animal Parks (Glovebox Guidebook) by Bill Bailey, 1992-05
- Texas Zoos and Animal Parks (A Road Runner Guide) by Ann Ruff, 1990-04
- The Popcorn Park Zoo. (refuge for animals that were unwanted, sick or abandoned; located in New Jersey): An article from: Children's Digest by Lou Harry, 1997-03-01
- Animal Care and Management at the National Zoo: Interim Report by Committee on a Review of the Smithsonian Institution's National Zoological Park, National Research Council, 2004-02-24
- Animal Care and Management at the National Zoo: Final Report by Committee on the Review of the Smithsonian Institution's National Zoological Park, National Research Council, 2005-10-24
- Second Nature: Environmental Enrichment for Captive Animals (Zoo and Aquarium Biology and Conservation Series)
- Savages and Beasts: The Birth of the Modern Zoo (Animals, History, Culture) by Nigel Rothfels, 2008-03-16
- Wild Lives: A History of People & Animals of the Bronx Zoo by Kathleen Weidner Zoehfeld, 2006-03-14
- Postcards from the Zoo: Animal Tales from a 25-Year Zoo Safari by Darill Clements, 2003-04
- Zoo by Britta Jaschinski, 1996-05-13
- Zoo Animals (Look & Talk Board Books) by Ladybird, 1999-12
- Life at the Zoo: Behind the Scenes with the Animal Doctors by Phillip T. Robinson, 2007-03-30
- Zoo Animals (Mini Fact Finders) by Ingo Rieger, 1991-03
- Zoo Animals: From Elephant Trunks to Camel Humps (Twin Sisters Productions) by Kim Mitzo Thompson, 1995-09
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