United States Zoos Categories
- Alabama (5)
- Alaska (1)
- Arizona (4)
- Arkansas (1)
- California (15)
- Colorado (3)
- Connecticut (1)
- Delaware (1)
- Florida (14)
- Georgia (3)
- Hawaii (2)
- Idaho (3)
- Illinois (8)
- Indiana (9)
- Iowa (2)
- Kansas (7)
- Kentucky (2)
- Louisiana (4)
- Maine (1)
- Maryland (4)
- Massachusetts (5)
- Michigan (4)
- Minnesota (4)
- Mississippi (2)
- Missouri (6)
- Montana (2)
- Nebraska (4)
- Nevada (3)
- New Jersey (3)
- New Mexico (3)
- New York (11)
- North Carolina (3)
- North Dakota (3)
- Ohio (7)
- Oklahoma (3)
- Oregon (3)
- Pennsylvania (11)
- Rhode Island (1)
- South Carolina (4)
- South Dakota (2)
- Tennessee (4)
- Texas (14)
- Utah (2)
- Vermont (1)
- Virginia (5)
- Washington (5)
- Washington, D.C. (1)
- West Virginia (1)
- Wisconsin (6)