World’s first kiss happened 20 million years ago and it did not involve humans

Scientists suggest kissing is much older than humans. Evidence points to ancient primates sharing affectionate mouth-to-mouth gestures. This behaviour likely evolved for social bonding and conflict resolution. Modern human kissing may inherit these ancient biological foundations. This discovery reveals that many human behaviours have deep evolutionary roots, not just cultural origins.

World’s first kiss happened 20 million years ago and it did not involve humans
Scientists suggest kissing is much older than humans. Evidence points to ancient primates sharing affectionate mouth-to-mouth gestures. This behaviour likely evolved for social bonding and conflict resolution. Modern human kissing may inherit these ancient biological foundations. This discovery reveals that many human behaviours have deep evolutionary roots, not just cultural origins.