Good kids book, I alternated reading the short chapters with my homeschooled 5 year old. The shortness of the chapters really helped him gain confidence in his reading ability.
It is a soft SciFi bordering on fantasy, with a variety of plot holes, and lots of discrimination against inorganic life forms, so had to take off a star.
By itself could have let the talking animals, and other soft SciFi elements go without demotion.
But the fact that the author maintained that the robot was not alive and did not have feelings is intolerable, so had to take off a star. Would have taken more off but I recognize the author is probably just writing from a place of ignorance and so this kind of bigotry seemed acceptable to him and his editors.