Zoo Boo is Dakota Zoo’s family trick-or-treat event, with kids collecting treats from area businesses and visiting the zoo’s animals. Dakota Zoo lists the 2026 event for October 24 from 1:00-4:00 PM, with a $5 admission fee for all ages, and notes that the fee applies to both members and non-members. It is described as a fundraising event, and the zoo’s schedule page repeats the same date, time, and fee.