A Pallas kitten, a threatened species of wild cat found in western Asia, southeastern Siberia and China, nurses at the San Diego Zoo.
| A Pallas kitten, a threatened species of wild cat found in western Asia, southeastern Siberia and China, nurses at the San Diego Zoo. |
The first zoo in America opened 133 years ago in Philadelphia, Pennsylvania. Now there are 187 U.S. zoos with thousands of species, from the pygmy chimpanzee to the giant panda. Here are the zoos with the most species:
1. San Diego Zoo and Houston Zoo (tied) 800 species
2. Omaha Henry Doorly Zoo 740
3. Denver Zoo 720
4. Toledo Zoo 715
5. St. Louis Zoo 700+
World Almanac and Book of Facts © 2001. All rights reserved.