Mac Barnett is the author of several books for children, including Extra Yarn, illustrated by Jon Klassen, which won a Caldecott Honor and a Boston Globe–Horn Book Award; Sam and Dave Dig a Hole and The Wolf, the Duck, and the Mouse, both also illustrated by Jon Klassen; and President Taft Is Stuck in the Bath, illustrated by Chris Van Dusen and, most recently, What Is Love?, illustrated by Carson Ellis. Mac Barnett lives in California.