It's possible there ISN'T an Heir of Gryffindor and other matters

[probonoprobono]

No: HPFGUIDX 58297

>"Grey Wolf" wrote: 
> Vampires are mentioned in all four books, as well as in Magical 
> Creatures, where we are told that, since they're beings, they do 
not 
> belong to that book (like giants, humans or elves).

Me, (who incredulously does not yet have the Magical Creatures 
book), would also like to add that Percy states in GoF that vampires 
are considered "Non-Wizard Part-Humans". 

Hope that also helps. 

I love all the little hints towards Snape being a vampire throughout 
the series, but the one thing that has always caused doubt in my 
mind is the fact that Harry has seen numerous pictures of vampires 
in his DADA classes and never once sees any resemblence between them 
and Snape. 

from PoA: 
"Harry had never met a vampire, but he had seen pictures of them in 
his Defense Against the Dark Arts classes, and Black, with his waxy 
white skin, looked just like one."

-Tanya