I don't know if the bible is REALLY talking about Vampires or what not. I told my Uncle who is very into God and Jesus and he said it was probably talking about dragons but I don't really know. I guess it could be talking abour Demons and all but I don't really know and if it is talking about Vampires wouldn't that go against God and his existence?
Proverbs 30:14
There are those whose teeth are swords, whose fangs are knives, to devour the poor from off the earth, the needy from among mankind.
Deuteronomy 12:23
Only be sure that you do not eat the blood, for the blood is the life, and you shall not eat the life with the flesh.
Revelation 9:8
Their hair like women's hair, and their teeth like lions' teeth;