Doreen Cronin is the author of many bestselling and New York Times bestselling picture books, including Click, Clack, Quack to School!; Click, Clack, Surprise!; Click, Clack, Ho, Ho, Ho; Click, Clack, Peep; Click, Clack, Boo!; Dooby Dooby Moo; Thump, Quack, Moo: A Whacky Adventure; Bounce; Wiggle; Duck for President; Giggle, Giggle, Quack; Bloom; and the Caldecott Honor Book Click, Clack, Moo: Cows That Type as well as The Chicken Squad series and Cyclone. She lives in Brooklyn, New York. Visit her at DoreenCronin.com.

Brian Cronin grew up with bunnies and dogs in Ireland. He likes bears in books. He is an internationally known artist and has had two retrospectives: at the Irish Museum of Modern Art and Casa da Cerca Centro De Arte Contemporânea in Portugal. His work has appeared in The New Yorker, The New York Times, GQ, and many other publications, and he's also designed stamps for An Post, the Irish post office. He's won the Society of Illustrators Founders Award for his first book, The Lost House, and a New York Times Best Illustrated Award for The Lost Cousins. He lives in Brooklyn with his daughter, two dogs, and a cat.