Zookeepers Train for Level Three Furry Outbreak:

TAMA, Japan -- A Japanese zoo prepared for animal escapes by chasing a volunteer dressed in a lion costume.

Zoo staff set up makeshift fences to contain the wild beast. If it was not a drill, the animal would be shot with a tranquilizer and quickly moved back to its cage habitat.

The annual costumed rehearsal is a favorite spectacle for zoo goers. Last year, the zoo practiced capturing a man dressed as an escaped polar bear.

All of the drills have been successful, zoo officials said.