This non-scary, kid-friendly Halloween experience is filled with laughs and adventure. 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 18–30, 2016
*5:30 to 8:30 p.m. 



  • $6 for Zoo members 
  • $7 for non-members
  • Free for children under 2
  • $1 discount for children 2 to 12 in costume with on-site ticket purchase

Spooktacular Fun for Families!

Decorated Grounds and Festive Activities

  • Haunted Hollow with creepy caverns and sinister swamps beware!
  • Entering the Zoo could be tricky to do if you get caught in Master Weaver's giant web!
  • Flit and frolic in Fragile Forest Fairyland.
  • Meander through the mystery straw mazes in South Entrance Plaza and the Children’s Zoo.
  • 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!
  • Learn more about the Zoo’s creepier animals and participate in animal-related activities in the educational Creepy Crawly Corner.
  • Make a creepy craft to take home at the Kid's Craft Corner in the Herpetarium.
  • 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.

The spooktacular Children’s Zoo shows featuring live animals returns this year at 6 and 7 p.m. nightly, with an additional 8 p.m. show on Fridays and Saturdays.

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


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 4-D Theater for a showing of “Dracula 4-D!” On holiday in Transylvania, teenager Kevin and his bumbling dad accidentally awake the undead vampire Dracula! (Additional fee $5/person.)

Fireside Stories

Gather 'round the fire as storytellers like Terry Rantula 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% (20% for members) off of any purchase.


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
  • Mid America Chevy Dealers 
  • Prairie Farms Dairy 
  • Wells Fargo Advisors  
  • Build-A-Bear® Workshop At The Zoo  

Media Support

  • KPNT (105.7 The Point) 
  • KNOU (Now 96.3). 


*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.