Doreen Cronin is the author of the bestselling Caldecott Honor-winning picture book Click, Clack, Moo: Cows That Type and other popular titles including Duck for President; Giggle, Giggle, Quack; and Diary of a Worm. She wiggles around in New York, USA, with her husband, Andrew. Scott Menchin has created illustrations for many high-profile companies and publications including Dr Pepper, Rolling Stone, and The New York Times. He lives with his wife and their wiggly, giggly daughter in New York, USA.