An employee at a Japanese zoo was acting like a real animal Tuesday — dressing up like a zebra for an emergency drill.

About 150 workers at Japan’s Ueno Zoo worked to corral their costumed colleague, who was causing controlled mayhem in the 35-acre Tokyo enclosure.

“Every year, a keeper plays the role of an escaping animal,” a zoo spokesman told France24. “They know how the animals would act in the event of disaster and their escape.”

This year, the scenario was that an earthquake caused a zebra to break out of her enclosure and injure a zookeeper before finally getting taken down with a fake stun gun.

“The zebra is an animal that easily panics,” said Yumi Tamura, a 27-year-old gorilla caretaker who played the part of the zany zebra. “I myself felt panicky when acting it out.”

The zoo has performed similar drills with human rhinos, lions and monkeys.