Join us in October to learn more about Zoo Boo! Enjoy free trick-or-treating, pumpkin spice, and everything nice at San Antonio Zoo this Halloween season for ZOO BOO!, presented by PNC Bank. This non-scary Halloween event will be open daily from September 16 – October 31 with zoolightful activations like live music, costume parties, multiple realms of Halloween fun, daily FREE trick-or-treating hour, and exciting interactions for little ghouls, goblins, and of course, your boo!