Not too sure on that myself. I didn't look into whether or not she was human while we were running. Would a vampire attack a shifter, you think? You can take a look at her.
The Doctor loves him so I'm assuming you will too. All it really translates to is: competent doctor who fights for what he believes in and is difficult to scare or threaten. Beneath it all he's a sweetheart.
He has not but he did know about the glyphs so whichever vampire is leaving those things around he knows about.
Never really liked cats myself.
Probably not. At least, not without years or months of friendship and trust. Maybe we should befriend one of their friends and ask them.
Sam doesn't come from the Salvatore world though. Neither does Hannibal. We're still out of the loop on them. And, Jack, most if not all hunters are killers. It comes with the territory.