Who laughed the man or the monkey first? Maybe the monkey. If until now it was thought that primates laughed only by imitation, now we know that this is not the case. Thanks to a study conducted by researchers from the University of Portsmouth (England) who enjoyed tickling around twenty orangutans, gorillas, bonobos and chimpanzees. Then comparing the laughs to those of some children they discovered that monkeys not only laugh like us, using the same physical mechanisms (the type of breathing, the emission of sound), but also for the same reasons: when they experience an emotion . And the first real "joker" in history could have been the common ancestor of man and ape probably lived tens of millions of years ago. But so little is known of him - many hypotheses and no certainty - that it is difficult to know even what mood he was.

In the picture, an Indonesian orangutan (Pongo pygmaeus).

Many other curiosities about monkeys

Do you know why laughter is contagious?