Shark vs. Train by Chris Barton and Tom Lichtenheld

Shark vs. Train by Chris Barton and Tom Lichtenheld (illustrator), 2010, Little, Brown and Co., ISBN 978-0-316-00762-7
PS: A shark and a train compete in a series of contests on a seasaw, in hot air balloons, bowling, shooting baskets, playing hide-and-seek, and more.
This is a cute but simple book that highlights strengths and weaknesses, and shows that no matter how big or strong something/someone is, there are times when it is vulnerable. Perfect book to put on my "we all have our gifts" bookshelf. I'm thinking it's a good book for boys too, starting around first grade and going on up to 4th or 5th (when they can start predicting and explaining and creating their own examples).
By the way, Barton is also the author of The Day-Glo Brothers, and Lichtenheld wrote the New York Times bestseller Duck! Rabbit!