A Tokyo zoo ran an emergency drill for staff on how to respond if large animals should escape.

The video above shows two staff members of the Ueno Zoological Gardens clad in a papier mâché rhinoceros costume.

Staff and police surround the "rhino" with a net and pretend to tranquilize and capture it.

Zoo officials are concerned about the real possibility of animals escaping from enclosures in a country like Japan that is prone to earthquakes. These annual drills prepare the staff for such an event but without any real danger.