Is he smilng?

https://vignette.wikia.nocookie.net/...20130203041026
Honest question.

Looks like he's smirking.

Nah, I'd say it's more like a growl.

You know when you're merrily stroking a cat and they're purring away... then you stroke that one place on their back that they hate.

I think it's just the shape of his jaw.

He can do whatever he wants.

That is a mating gesture. :bigsmile: