Guji Guji by Chih-Yuan Chen

Guji guji is a crocoduck. Aka, a crocodile RAISED as a duck. This is a cute story about how he is raised by ducks and then confronted by crocodiles one day (who reveal to him that his really isn't a duck) who want him to help them eat his duck family. Instead, he and the ducks trick the crocodiles and drop rocks into their mouths and break all of their teeth.

Mama Duck is great. She's practically always got a book in hand and you can tell she probably goes a little bit wild with naming her babies (Crayon, Zebra, Moonlight, and of course, Guji guji).

Kane/Miller Book Publishers, 2004.