QuoteHow scientists taught monkeys the concept of money. Not long after, the first prostitute monkey appeared.
You may have thought things like currency or money are concepts known solely by man – something which differentiates humans from animals. Some might have a sense of ownership, besides of course territory, but trading and the likes haven't been observed in any other species besides homo sapiens. However, in 2005, an economist/psychologist duo from Yale managed to teach seven capuchin monkeys how to use money, and I'm pretty sure from here on some of you might be able to guess what happened from there on.
https://www.zmescience.com/research/how-scientists-tught-monkeys-the-concept-of-money-not-long-after-the-first-prostitute-monkey-appeared/