This book by Julia Donaldson and illustrated by Axel Scheffler (yes, the very same duo who were behind the Gruffalo) unexpectedly hit me right in the feels. I read it to a child from church,* and it seemed to go down well, which I can only partly attest to its quality as a children's book because I'm an incredible read-out-louder. That said - the text is rhythmic and flows aloud perfectly, and is even occasionally a bit funny, the plot is genuinely quite compelling, the illustrations are beautiful, the friendship between the two main characters thoroughly heartwarming. A classic.
* For those of you who suspect this is just another excuse for the fact that for an intellectual 24-year-old I read a lot of children's books, yes, you, shut up.