Wikipedia:Vampire Bat (New Window)
There are sections with nformation about the three different species of vampire bats, conservation status, scientific classification information, feeding and anatomy.
National Geographic Kids: Vampire Bats (New Window)
A nice site with information and pictures that you can scroll through, a video about vampire bats and vampire bat e-cards.
National Geographic: Common Vampire Bat (New Window)
This site has a common vampire bat profile, fast facts about vampire bats, a vampire bat sound file, a video and a printable fact sheet as well..
Biogeography of the Vampire Bat (New Window)
A site of the San Francisco State University Department of Geography, this site offers a more technical view of vampire bat facts.