One rainy day is a book about many different animals who gather under a tree to get away from the rain but the pig remains wet because he can't fit under the tree with all of the other animals that are already there.

Pig tries to explain to his friend (or father?) how he got soaking wet on the way home, and as he tells his tale, we begin to realize that he has a wild and crazy imagination. His excuse is that there was no room for him under the tree because an increasing number of animals arrived and crowded him out. It's a counting book, too. I like the way the pig's imaginary tale is illustrated on part of the page, while Pig and Goat are shown in "real life" below. A pull-out page shows just how jam-packed it got under the tree. A funny surprise ending adds an extra punch.

Pig's reasons for being wet are not what they first seem to be. Preschool and up. Possible reader's theater