Calling all ghosts, goblins, and witches - join us for Boo at the Zoo!

Grab a program as you enter the Zoo and follow the clues on our self-guided scavenger hunt to trick-or-treat for special edition animal Trading Cards throughout the Zoo. Upon completing your scavenger hunt, collect a bonus Trading Card and a fair trade organic chocolate from our presenting sponsor TCHO chocolate*.

Remember to dress in costume (no inflatable costumes - they can scare the Zoo animals) when you visit. Win great prizes at our in-person costume contest held each day of Boo at the Zoo at 12 p.m. in the Wildlife Theater located in the Wayne & Gladys Valley Children's Zoo or tag #OaklandZoo on social media to enter our virtual costume contest!

Come and celebrate Halloween at Oakland Zoo this year!

*Candy may contain tree nuts.