comparative ethology, or do i mean, comparative behavorial ethology? either way, its worth somthing.
Humans have all the signs of evolution from a common ancestor with chimpanzee. We have all the signs of being a great ape. I’m sure theres plenty of specific facial feature responses to stimuli as well.
Looking at a monkey’s facial expressions when its anger/upset for example, its probably a lot closer to ours than a dog or cat.
When I didn’t believe in evolution, I never noticed how freaking similar most animals are. Most animals have eyes, legs, arms, noses, mouths, etc. When one uses their imagination, one could create millions of different looking species, but most are have the same common parts.