He may also be trying to groom you.
If they scrape their teeth(usually the bottom teeth)a crossed your skin like trying to debark a tree...it may be that.(?)
He may be trying to clean a scent off of you that he doesn't like or that is new to him.
When they groom you it can be very painful...but it's not like a chomp where they bite down hard and are trying to draw blood.
But I don't think he is trying to cannibalize you for more meat in his diet.