A caged monkey tried to escape by hitting the walls of its enclosure with a rock.
Bizarre on Female First
The Colombian white-faced capuchin shocked visitors at the Zhengzhou Zoo in Central China's Henan Province when it broke the glass display wall.
However, the monkey frightened itself - as well as tourists - and ran in the opposite direction, instead of making a break for the outside world.
Staff member Tian Shuliao 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.''