* Denver Zoo, Colorado
* Honolulu Zoo, Hawaii
* Jacksonville Zoo and Gardens, Florida
* Kansas City Zoo, Missouri
* Louisville Zoo, Kentucky
* Memphis Zoo, Tennessee
* Milwaukee County Zoo, Wisconsin
* Minnesota Zoo, Minnesota
* Oklahoma City Zoo, Oklahoma
* Omahas Henry Doorly Zoo and Aquarium, Nebraska
* Philadelphia Zoo, Pennsylvania
* Phoenix Zoo, Arizona
* Potter Park Zoo, Michigan
* Red River Zoo, North Dakota
* Sacramento Zoo, California
* San Diego Zoo, California
* San Francisco Zoo, California
* Smithsonian's National Zoo, Washington, D.C.
* St. Louis Zoo, Missouri
* Tampa's Lowry Park Zoo, Florida
* Tulsa Zoo, Oklahoma
* Utahs Hogle Zoo, Utah
* Virginia Zoo, Virginia
* Woodland Park Zoo, Washington
* Zoo Atlanta, Georgia
* Zoo New England (Franklin Park Zoo og Stone Zoo), Massachusetts