DENVER (CBS4) – This weekend there were a lot of wild animals running loose at the Denver Zoo — and not lions and tigers and bears — although there were some of those as well.

Children got all decked out in their Halloween costumes for “Boo at the Zoo.”

PHOTO GALLERY: Boo At The Zoo

There were more than 25 trick-or-treat stations sprinkled throughout the zoo for children of all ages. Even some of the parents dressed up and Rocky the Nuggets mascot stopped by.