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

"A comparative approach to the evolution of kissing," was published by Evolution and Human Behavior on Nov. 19 ...

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

We used this definition to trawl published scientific papers, searching for observations of kissing in the group of monkeys ...