My daughter is a HUGE fan of dragons, so we recently bought a few dragon books from Amazon without reading them first. This is by far the favorite. The illustrations are awesome, and the story is meaningful without beating you over the head with a "lesson." [spoiler alert]
A dragon egg hatches during a tea party, and the rabbit and hedgehog bring him home. As he grows, he no longer fits in their house. Eventually, he gets stuck and they demolish their little house trying to get him un-stuck. So they build a bigger house (castle) that everyone can fit in.
I love that the book subtly focuses on critical thinking to solve major problems. It also does a great job showing us that even though things can go massively wrong, we can work together to put them back together.