Eli5: How come all animals look like each other (ex. You won’t tell the difference between 2 squirrels) but humans differ so heavily? Why do humans have so many unique facial an body features?

Question

Eli5: How come all animals look like each other (ex. You won’t tell the difference between 2 squirrels) but humans differ so heavily? Why do humans have so many unique facial an body features?

In: Biology

Answer 1

The human brain is exceptionally good at recognizing human faces. An entire section of it is dedicated to that purpose. [There is a neurological disorder that screws up that part of the brain and breaks its ability to recognize faces](https://en.wikipedia.org/wiki/Prosopagnosia). People can still tell who other people are, but using other ‘methods’ that aren’t as powerful as straight up facial recognition.