Book 49: Stellaluna, by Janell Cannon, Harcourt, Inc 1993. Preschool to Elementary
I've been fascinated by bats, especially fruit bats, for a while, but until Stellaluna came out, I'm pretty sure not too many children were. Now, I know that Stellaluna is a well-circulated book at the library and on one of the library's computers as a game. Bats no longer elicit an automatic scream, at least not the ones that are as charmingly illustrated as Janell Cannon's.
In addition to showing bats in a rather flattering light, Stellaluna is about the importance of family and making friends -- timeless and appropriate themes for a children's book.
If you haven't read Stellaluna, you should, if only to see the cutest little bats ever.