Zoo hours for 2024: The zoo is open Tuesday through Sunday from 10 a.m. to 5 p.m. The last entry is at 4 p.m. The zoo is closed on Mondays, except for Memorial Day, Labor Day, and Indigenous Peoples Day. Please note that some exhibits are closed due to construction. For more information, visit 'Plan Your Visit' - 'Hours & Pricing'. (dismiss)

Location: Entire zoo with activities on the Festival Lawn

Boo at the Zoo is a two-day “merry not scary” Halloween event for the whole family. Trick-or-treat stations, decorated trails and Zookeeper Chats make this fall weekend at Niabi perfect for the young and young at heart. Don’t forget your costume!

Boo at the Zoo activities are free with paid zoo admission.