Mac Barnett is the New York Times bestselling author of many picture books, including The Important Thing About Margaret Wise Brown, the New York Times bestselling The Wolf, the Duck, and the Mouse, the Caldecott Honor Book and E. B. White Read Aloud Award-winner Sam and Dave Dig a Hole, and the Caldecott Honor Book and Boston Globe-Horn Book Award winner Extra Yarn. He is also the coauthor of the bestselling Terrible Two series with Jory John. Mac lives in Oakland, California.