And it was all caught on video! Visitors at the Zhengzhou Zoo, in Central China, were there to witness a shattering moment of triumph, all at the hands of one clever little monkey.
Perhaps 'Planet of the Apes' is closer to reality than we thought?
Story via Daily Mail
Tourist Mr Wang told Daily Mail, "The monkey was sharpening the stone, then it started hitting it on the glass."
Tian Shuliao, Zhengzhou Zoo staff member, told local media: "This monkey is unlike other monkeys. This one knows how to use tools to break walnuts. When we feed walnuts to other monkeys, they only know to bite it. But it had never hit the glass before though. This is the first time. It's toughened glass, so it would never have got out. After it happened, we picked up all the rocks and took away all its 'weapons'."
Zoo officials said the glass will be replaced and they would increase patrols to make sure a situation like this doesn't happen again.
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