A couple of years ago, while I was at a dog park and having a great time watching dogs play, I heard a young girl screaming to her mom, "Look, look -- Rosie is making out with Henry!" I turned around ...

Why is swapping saliva something all human societies have normalised? Turns out kissing isn't just a human thing — all sorts of species appear to kiss, and new research suggests Neanderthals did it ...

Kissing is a big part of human culture. According to ancient cuneiform tablets found in Iraq, humans have been smooching since at least 2500 B.C. Around the world today, many societies share kisses in ...

Stories have long been swapped on awkward first kisses and princesses smooching frogs, but a new study suggests the earliest instance of two lips pressing together happened up to 21 million years ago ...