Mo Willems is a three-time Caldecott Honor winner (for Don't
Let the Pigeon Drive the Bus!, Knuffle Bunny, and
Knuffle Bunny Too). He also won two Geisel Medals for
There Is a Bird on Your Head! and Are You Ready to
Play Outside? He has published many popular titles, including,
most recently, Knuffle Bunny Free: An Unexpected Diversion
and the New York Times bestselling Cat the Cat books.
Before he turned to making books, Mo was a writer and animator on
Sesame Street, where he won six Emmys. Mo lives with his
family in Massachusetts.