Textual evidence and quotes from text
If you are unaware you don't know what's going on, but if you are unconcerned you know what's going on but you just don't care.
<span>"and his smile showed red lips and pointed teeth." is a good hint.
If you think about it, this line is the only one that would be used to describe an animal.
You can ask yourself, what do you think of when you read that line.
When I read it I could almost imagine a predator like a wolf snarling, showing it's vicious teeth. In effect, when he opened his mouth to smile it's like you're getting a glimpse into him and his nature.
</span>
