The Pocatello Zoo Boo is slated Saturday, Oct. 24, from 10 a.m. to 3 p.m. at the Pocatello Zoo. Activities include a Spook'acular Sonic Cemetery, The Headless Horseman and Bison Barn, and the Haunted Treehouse. There will also be a hay ride, trick-or-treat stations, games and animal myths. Hot cider will be provided in the Sonic Spider Cider Barn, and there will be hot lunches and soda. There will also be a costume contest with judging at 11 a.m., noon, 1 p.m. and 2 p.m. Admission is free ages 2 and under, $2.25 each for ages 3-11, $4.25 each for adults and $3 each for seniors. Zoological Society members enter free. Call 234-6264.