The monkeys are taught to use money, that's what they did.

A scientific study conducted by Laurie Santos, a professor of cognitive science and psychology from Yale University in Puerto Rico, continues to support the second claim, reports the BBC.

In fact, Santos and his colleagues studied the monkey's relationship with money several years ago. There were a total of six monkeys with names from the James Bond movies.

Mainly, scientists taught monkeys that metal coins that symbolize money can exchange them for food.

We taught them to see if animals, especially monkeys, pay attention to such things as the price and if they try to maximize their dollar. What we found was surprising. The monkeys often began to give their coins to scholars when they received more food “, Santos said.

The monkeys then started displaying some human characteristics, and one of them was opportunism. They stole coins, took them from those lying on the floor and from them while the scientists were not watching. Soon the coins were viewed as something very valuable.