This non-spooky event will be held every Saturday and Sunday during the month of October. All the Halloween family fun one can think of including Trick-or-Treat stations and a costume contest, will be spread all around the zoo so little ones can grab some candy while observing their favorite animals. The Zoo Boo! Express is a new addition to this year’s Halloween celebration. Addams family lookalikes will truly get into the Halloween spirit when climbing aboard and riding around the zoo.