The Zoo is open! 
All guests, including Zoo members, must now reserve free, timed tickets prior to visiting.

Review the Zoo’s reopening guidelines and make a reservation

When you are ready to visit, we're more than ready for you! Until then we are happy to continue to #BringTheStlZooToYou for you stay connected to your Zoo. 

March 09, 2021

Monkey Mania!

#StlZooMonkeyMania continues! 

Our primate keepers have selected eight monkey species to be featured in a friendly online voting competition. The champion will be featured on our social media and have the Primate House named after them for the day! Next up in our Arboreal Eight is the black-handed spider monkey vs. Guereza colobus monkey.

Spider monkeys communicate with their friends and family with whoops, whinnies, sobs, tee-hees, trills, twitters and squeaks!

Do you associate snorting with something funny? Colobus monkeys will actually let out a loud snort whenever they feel alarmed by something to alert other family members of potential dangers.

Which do you feel has the most unique vocalizations?

Make your selection at

Hellbender Conservation

On Monday, Missouri’s populations of eastern hellbenders were granted protection under the federal Endangered Species Act. The hellbender is North America’s largest aquatic salamander. There are currently two subspecies of hellbender: the eastern hellbender and the Ozark hellbender. The Ozark hellbender was granted protection a decade ago. Missouri is the only U.S. state in which both subspecies are found. See the story on
Since 2008, more than 8,600 Saint Louis Zoo-raised endangered hellbenders (664 eastern and 7,977 Ozark) have been reintroduced to the wild in Missouri. The program is in cooperation with Missouri Dept. of Conservation and U.S. Fish and Wildlife Service.
Read more about our work with hellbenders at