Emma Chichester Clark 
Will and Squill [PDF ebook] 

A sweetly told tale about the friendship between a boy named Will and a squirrel named Squill. They do just about everything together until Will”s parents surprise him with a kitten, and she becomes Will”s new playmate, leaving Squill to feel lonely and left out. However, the boy soon discovers that Kitty likes to sleep most of the day and doesnt appreciate his favorite games. Will and Squill reunite, and the child realizes that old friends should not be abandoned for new ones.