Video: Fake zebra 'escapes' from zoo in Japan The drill saw the zookeeper - one of the newest members of staff - tackled and mock stun-gunned by his colleagues. Visitors to the Tama Zoological Park were evacuated for the drill, which also supposed that one of the keepers had been severely injured when attempting to catch the escaped animal with a giant net. The premise of the escape was that an earthquake - a regular occurrence in seismically-active Japan - destroyed a stone wall surrounding the animal's enclosure.