This document discusses definitions of fantasy in children's literature and provides examples of stories featuring mice characters. It explores defining fantasy by elements like elves/fairies, historical settings, or the presence of magic. However, it notes that fantasy is hard to define by a single element. It highlights the Chronicles of Narnia and Redwall series as famous fantasies involving mice. It also lists several other famous mice characters in children's literature and books from 2011 featuring mice protagonists.