Caution: Babies at Work! These babies are busy building a wonderful playhouse in this bustling picture book for fans of Mighty, Mighty Construction Site. Wearing their hard hats, safety goggles, and work boots, a team of toddlers are busy building away. Using excavators, shovels, and bulldozers, they are hard at work making their perfect playhouse blueprint come to life. Jaunty rhyme perfectly complements the playful and bouncing illustrations in this kid pleaser.