Mummies and daddies are invited to bring their little ghouls and goblins to a day of educational activity stations and animal enrichment throughout the Zoo. Encounter surprises and goodies along the way, along with your favorite costumed characters and entertainment. Be sure to come and show off your costume at this event. There are plenty of photo opportunities including haystacks, pumpkins, and of course, our animals! It is a safe Halloween event all ghouls and goblins are sure to enjoy. Spooky Saturday is not a trick-or-treating experience.

 October 29, 2016

  • 9 a.m. to 3 p.m*
  • One Day Only - Admission is FREE!

Halloween Fun For All!

Activities Galore!

  • Educational Activity Stations 9 a.m. - 1 p.m.
  • Cardinal Glennon Kids Interactive ER  9 a.m. - 3 p.m.
  • Entertainment 9 a.m. - 3 p.m.
  • Pumpkin Stomp 'n Chomp animal enrichment 9 a.m. - 2:30 p.m.
  • Crafts and Games 11 a.m. - 3 p.m.
  • Costume Character Meet-and-Greet 2:15 p.m.
  • Admission is free from 9 a.m. to 4 p.m. only.

Boo-tiful Costume

This year's Boo at the Zoo souvenir T-shirt features a polar bear dressed as Sherlock Holmes. The long-sleeve white cotton shirt. Prices range from $11-$19 for toddler to adult sizes. Shirts will be available for purchase by calling (314) 646-4771 or at Safari Gift Shop and Treetop Shop, while supplies last.


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.

Boo at the Zoo Nights

Join is for our special Halloween evenings: Boo at the Zoo Nights, October 16-30, from 5:30 to 8:30 p.m.! This non-scary, kid-friendly Halloween experience is filled with laughs and adventure.  Children are encouraged to wear costumes. Boo at the Zoo Nights is not a trick-or-treating experience.


  • SSM Health Cardinal Glennon Children's Hospital 
  • Mid America Chevy Dealers 
  • Wells Fargo Advisors
  • Delta Dental of Missouri
  • Build-A-Bear Workshop® At The Zoo 

Media Support

  • NOW 96 
  • 105.7 The Point


*The Zoo will close to the public at 4 p.m. on Spooky Saturday  (all pathways, exhibits, and attractions will no longer be open.). Doors will re-open at 5:30 p.m. for Boo at the Zoo Nights. Spooky Saturday visitors who are also planning to attend Boo at the Zoo Nights the same day may retrieve a sticker from a Welcome Desk before 4 p.m. which will allow them to stay on grounds until the evening event begins. Lakeside Cafe will remain open for refreshments.  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.

The Zoo's wheelchair, stroller and ECV rental fees apply for this event.