Pretty sure we are the only animals with pink rings around our mouth. It’s flipping weird.
It probably helps with verbal language understanding as humans often use mouth movements to interpret words (see McGurk effect). But I still think it’s weird.
Big pink rings.
My understanding is that focus on the mouth in social interactions is also influenced by culture. That’s why some cultures generally represented a happy face with the emoticon
:)while others used^_^The former is focused on the mouth and the eyes lack meaningful expression, while the latter is the opposite.