The San Antonio Zoo once again hosts this family-friendly, non-spooky Halloween celebration held every weekend day September-October. The zoo will be decked out with Halloween fun complete with trick-or-treat stations, pumpkin painting, dance parties, costume contests, a hay maze, a hay slide and plenty of games. Families can even enjoy a ride on the Zoo Boo! Express. Little ghouls and goblins are encouraged to wear their best costume for a chance to be in a costume contest. Children of all ages and adults are welcome to dawn non-scary, family-friendly costumes.