> > In Keri Arthur's recent novel _Full Moon Rising_, vampires are > fertile for the first 24 hours after rising from the dead. Any > children that result are called dhampires, and have some vampire > traits. > In the Dark Jewels Trilogy by Anne Bishop (which I plug as often as possible, because I adore them), an undead Guardian (essentially a vampire) sires children by taking a magical potion that allows him to be fertile again.