Kissing feels so tied to human life that it can seem almost impossible to separate from romance, family, grief, ritual, or desire. It sits inside wedding vows and movie endings, in greetings, ...

Male gentoo penguins present tiny pebbles to the females to show affection. With Valentine’s Day upon us, it’s the perfect time to check in on how the animal kingdom is gearing up for the most ...

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 ...