http://en.m.wikipedia.org/wiki/Vampire ** * Scientifically how could vampire's exist? Wipe out the jokes, and myths. What do you really think are there weaknesses. Besides thirst. If they were called something else whats the terms before vampire, way back. Could the bible say demons and mean other things to include the monsters we know of today. Like werewolf, vampire, and others. And is there anyone here 18 and older that will admit they might believe the possibility they really exist? And if so why?