In China, a monkey tried to escape from the zoo by breaking glass. For this, she used a prototype tool.
The animal so wanted to be free that it did not stop before the escape. Only a glass fence interfered, but the monkey dealt with it at help of a pointed stone. Similar tools – chopped – used primitive people.
Zoo workers prevented the freedom of primacy. Soon they also removed all the stones from the aviary, fearing that the animal would not will leave attempts to escape.
According to the menagerie, this monkey is the smartest of living in the zoo. Only she uses guns to split nuts.