The zebra - actually a zoo staff member dressed up in a furry suit - supposedly bolted from a cage at Tokyo's Ueno Zoo after an earthquake destroyed its enclosure.
It then wandered around the zoo before ramming into a wall and sending a keeper to hospital with a heart attack.
After injuring another keeper, the zebra was subdued with a fake stun gun and bundled onto a nearby pick-up truck, as curious zoo visitors looked on, laughing and taking photos.
"I myself felt panicky when acting it out," she told reporters.
Past simulations at Tokyo's city-run zoos have featured faux gorillas, rhinos, lions and orangutans making a break for freedom.
"Every year, a keeper plays the role of an escaping animal," said an Ueno zoo spokesman.
"They know how the animals would act in the event of disaster and their escape.
