😽 Scientists Reveal When Kissing Began

Researchers estimate that kissing originated about 16 to 21 million years ago. It likely started with the common ancestors of humans and great apes.

It turns out that humans and primates are not the only ones who do this. Polar bears, wolves, and even albatrosses also engage in kissing.

However, the exact reason for the evolution of kissing remains a mystery. One leading theory suggests it helps animals check the health of a potential partner.

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