Bring your little ghouls and goblins for a non-scary, kid-friendly Halloween experience. Children are encouraged to wear costumes. Children 12 and under will receive a treat bag upon exiting. Boo at the Zoo Nights is not a trick-or-treating experience.

Nightly, October 17–30, 2017
*5:30 to 8:30 p.m. 

Purchase Tickets Online


  • $6 for Zoo members (ages 2+)
  • $7 for non-members (ages 2+)
  • Free for children under 2
  • $1 discount for children 2 to 12 in costume with on-site ticket purchase
  Boo at the Zoo Nights
Boo at the Zoo Nights

Spooktacular Fun for Families!

Decorated Grounds and Festive Activities

  • NEW this year! Pick a pumpkin, paint a pumpkin! Find your new friend at the Tropical Traders gift shop and paint him with the help of Zoo volunteers. (Additional fee $5/pumpkin.)
  • Our new Witchy Walk welcomes little monsters. Learn some wicked educational facts from our friendly characters.  
  • Begin your haunted journey at the Zoo by posing with some pumpkins at the South Entrance or saluting a scarecrow at the North Entrance. 
  • Flit and frolic in Fragile Forest Fairyland.
  • Take a break from the Halloween action at the kids’ game area. Parents can grab a drink from Ray’s Grill while the kids play games like limbo, Halloween-themed bean bag toss, tic tac toe and more.
  • Ghosts gather here! Find educational stations around the Zoo and learn about some of the Zoo’s creepier-looking animals, like vultures and hellbenders. 
  • Look hauntingly good as you stick your face into bodies of a ghost, pumpkin, Frankenstein or mummy for a spooky photo.

Animal Encounters

At the Charles H. Hoessle Herpetarium, catch sight of heroes in a half shell, observe frogs and toads maintaining their stealth camouflage, and practice your Parseltongue with the resident members of Slytherin. For a little more hocus pocus, check out the Emerson Children’s Zoo and see some awesome animals.

When you visit the Herpetarium and Children’s Zoo, you may find a keeper to answer your most mysterious questions about how we care for animals.

Catch a glimpse of sea lions and harbor seals taking a nighttime swim as you walk through the Sea Lion Sound tunnel. 

Please note, these are the only animal exhibits open at night during the event.

New Halloween Show!

Get pumped for some spooktacular new entertainment in 2017 – a Halloween-themed circus-performer show! The 30-minute act, which does not include animals, features jaw-dropping juggling, stilt walking, amazing magic and more on stage at the Sea Lion Show Arena. Shows are offered two times each night and are free with admission to the event. Tickets will be handed out on a first-come, first-served basis. Entertainment is provided by St. Louis-based Circus Kaput.


Eerily draped in cobwebs, the Conservation Carousel will be transformed to the not-so-spooky "Scare-ou-sel." (Additional fee $3/person. Note: Anywhere Plus Passes are valid at this event.)

Visit the 4D Theater for a showing of “Happy Family 4D,” a tale of a family that unassumingly goes to a theme park but ends up getting transformed into mystical monsters! (Additional fee $5/person.)

Interactive Storytelling

For a captivating and theatrical experience, gather around for some interactive storytelling. You might be called upon to act out a scene or join an activity! Storytellers will spin wild tales about snakes, spiders and bats. Perhaps Grandmother Goose will share chronicles of other critters. Come wag your wild tails, gaze with your glowing eyes and perk up your listening ears as captivating animal stories are shared.

Food and Souvenirs

  • Taste what's brewing at Lakeside Cafe
  • Shop the Halloween boo-tique at Safari Gift Shop for souvenirs. Receive 10 percent (20 percent for members) off of any purchase.
Look for the Greater St. Louis Ghostbusters at select nights of Boo at the Zoo! Look for the Greater St. Louis Ghostbusters at select nights of Boo at the Zoo!

Show us your spooky side by snapping a picture at Boo at the Zoo and share it with us on Instagram. Two lucky winners will win four tickets to our holiday lights event, U.S. Bank Wild Lights! To participate, share the pic on Instagram using the hashtag #StlZooBoo. (Make sure your profile is public!) Upload the photo during your visit using our brand-new Wi-Fi powered by Mid America Chevy Dealers. 

Learn More


Because Boo at the Zoo is a family-friendly event with young children who might be frightened, visitors age 13 and over in costume are not allowed unless they are accompanying children. Specifically, our policy requires no adults can be wearing a mask or otherwise have their face covered with face-painting, etc.


  • SSM Health Cardinal Glennon Children’s Hospital
  • Wells Fargo Advisors
  • Mid America Chevy Dealers
  • Prairie Farms Dairy
  • MetroPCS
  • Lowe’s
  • Boeing

Media Support

  • NOW 96.3
  • 105.7 The Point


*No reservations necessary.

The Zoo will close to the public at 4 p.m. each night of Boo at the Zoo Nights (all pathways, exhibits, and attractions will no longer be open.) Doors will re-open at 5:30 p.m. for the event. Zoo visitors who are planning to attend Boo at the Zoo Nights the same day may receive a sticker (with purchase of event ticket) from a Welcome Desk before 4 p.m. which will allow them to stay on grounds until the event begins. At 4 p.m., security personnel will be asking all guests to move toward the center of the Zoo where Lakeside Cafe will remain open for refreshments.

Purchase tickets online, or at the door on night of the event. Discounts do not apply when purchasing tickets online or by phone. The Zoo's wheelchair, stroller and ECV rental fees apply for this event.