Our ancient primate relatives—including Neanderthals—may have enjoyed a nice peck on the lips. But researchers still don’t ...

Parakeets don’t rush friendship. New research shows they test early interactions to minimize risk and build safe, lasting ...

In nature, it is not usual for animals to be deceptive, as evolution has typically favored communication that benefits both ...

Scientists have traced kissing back to early primates, suggesting it began long before humans evolved. Their analysis points ...