MAN there are a lot of intellects here!!!
here is some news about vamps....
--they are widely believed to be creatures of the night.(actually it was supposed to mean MOONLIGHT but was morphed. thus the hatered of son light.
--they ARE related to WERE creatures!!!!BUT.... the are always at battel with them.they are in controll of all creature of the night...wolves,rats,snakes...
--they have many supernatural powers,of course. they can change to a beam of moonlight,dust and fog. the can even control the weather to a minor extent.(note...J R R Tolkien has used that for the witchking Angmar)
-- they multiply...well most of that has been already spoken about.
--there is a lot more.but will write more lata.