Fact Snacks!

monkeys-can-learn-to-use-money-capuchins-that

Monkeys can learn to use money. Capuchins that were taught to exchange silver discs for treats began budgeting for foods they liked, buying more of something when the price dropped, and started gambling. Eventually, there was an incident where ‘money’ was stolen, and the rich monkeys even figured out they could pay each other for sex. Source Source 2 Source 3