A capuchin monkey was caught using a stone to smash the enclosure's glass at central China's Zhengzhou zoo on August 20.<br /><br />The video shows the monkey picking up a stone and smacking it against the enclosure's glass window.<br /><br />However, the tempered glass suddenly shattered when the monkey struck it for a second time, scaring the primate away.<br /><br />According to a visitor, the monkey rubbed the stone on the ground for a while before using it to break the glass.<br /><br />The zoo has cleared all stones up from the monkey's enclosure, reports said.
