Roverandom

Working my way through Tales From the Perilous Realm for the first time, but I've already read a couple. This was a re-read. 
This was originally written for Tolkien's son, Michael, when he lost his toy dog. With that being said it's incredibly silly, and lighthearted. Rover the dog bites a wizard on the seat of his pants and is turned to a toy dog. This is the story of his journey through that, and his journey home. 
My favorite thing about this little tale is that you can still see the grand scope in which Tolkien writes. His mine clearly always saw the big picture, and what could be, rather than just weaving a little something-something...even for his 4 year old son. 
Personally a 5/5* for me. I liked it even more the second time.