National Geographic Kids
National Geographic Kids: Animals: Vampire Bats
Great multi-media site from the National Geographic Society with great information, pictures and video of Vampire Bats. Sections include fun facts, video, audio, a map and send a postcard.
A to Z Teacher Stuff
A to Z Teacher Stuff: Bats Sample Lesson Plan (Grade 4)
This site provides a lesson plan on bats that contains links to a pre-test, notes on bats, and a post test.