Oh, the vampire toddler is AWESOME! I am SO definitely going to have my Sim in my special 100-baby challenge Try For Baby with a vampire to get a vampire baby!
(Pam, I know the 100-baby challenge is not family-friendly due to its nature, but I am just mentioning it, not linking to it here. If anyone wants to read my 100-baby challenge, they can go to the official Sims 3 forum to get the links. Won't mention it again.)