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.


SOME orangutans do: https://duckduckgo.com/?q=orangutan&iar=images&t=fpas
Ah so they do. How bout that. Yeah I would agree those are pretty close to human lips.