What is Human?

From my sketchbook.
Study for something

There are times when I draw faces that are exaggerated versions of people.  If this looks like an alien species, that is not the point.  It's a question.  

What is it that makes us look like humans?

We anthropomorphize almost everything from animals to random shapes in clouds.  How far can I push drawings before that stops?

I do consider this to be in the realm of fantasy, although you never can be absolutely certain about the line between fantasy and reality.