Because I made up a story a long time ago that included vampires, I have my own definition of them and how they came to be. In my version, vampires are immortal, however, they are able to be killed similarly to the way the vampires in Twilight are killed. They have to be torn apart and burned. Driving a stake through the heart does not work, it only slows them down. I do think vampires can live on animal blood just like human blood, however, vampires can also eat human food like in The Vampire Diaries. Human food sustains them between feedings of blood. I do not think vampires sparkle or have stone like skin. They're just as human looking as anyone else. They can go out in the sun, however, it's more like the House of Night Vampyres where it's not as comfortable.
I guess I take a bit from a few of the pop culture references of vampires.
Shiloh Adlar, Sixth Year, Prefect, RQT Co-Captain"Let us read, and let us dance; these two amusements will never do any harm to the world." -Voltaire