He loves to grab my fingers and bite them. Or claw at me when I pet him.

I think he thinks it's endearing. I'm definitely checking for signs of vampirism. I took the sound proofing off one of the windows in my room for natural light and have a lamp that is attached to a motion sensor so he gets light if I forget to turn it on. If I find a pile of kitty ash in the morning, that would answer that. And Scott would have some explaining to do.