In Caleb's Ride, Bruna ingeniously adapts the Miffy design elements to a popular story. Caleb is a tiny caterpillar who wants to be a butterfly, but first he must journey on the ark until he sees a rainbow. As children read this book again and again, they can use it to learn counting, identifying animals, and more.In Caleb's Ride, Bruna ingeniously adapts the Miffy design elements to a popular story. Caleb is a tiny caterpillar who wants to be a butterfly, but first he must journey on the ark until he sees a rainbow. As children read this book again and again, they can use it to learn counting, identifying animals, and more.