Boo at the Zoo will be held on October 22nd, 23rd, 29th and 30th for The Big Scare. Activities available include rides on the train into the abyss, maze, and a haunted house. On October 31, there will also be trick or treating at the Happy Haunting. The hours will be: The Big Scare: 6-10pm with the first train ride at 7:30pm and Happy Haunting: 2-6pm. There will be food and drink available for purchase at the concession stand.
Be sure to check the cost of admission and cost of all the available activities before you go as well as dates/times. When you follow the link, scroll down the page to see the Boo at the Zoo details.