Stories centered around true love's kiss might be tales as old as time. And, according to a new study, kisses might even have been around before humans walked the earth. Humans kiss each other ...

Great apes copy facial expressions of other apes with exact detail, a behavior that may reveal how human communication first ...

Humans perceive emotional expressions displayed by non-human primates and spontaneously mimic these expressions, according to a study published in the open-access journal PLOS One by Ursula Hess from ...

From dogs sitting like people to monkeys using tools and cats showing sass, these clips capture animals acting strikingly human-like. Equal parts funny, heartwarming, and fascinating, they reveal just ...