Chimpanzees and humans have many things in common when it comes to facial expressions and facial structure; however, they also have many significant differences!
Below is a series of imagery focusing on an action affected by the prominent brow ridge seen in chimpanzees:
- cheek raiser – an orbicularis oculi (orbital portion) action
Observe the key differences and similarities.Â
Pingback: chimpanzee vs. human expressions, part II - Face the FACS