Doreen Cronin is the author of many bestselling and <i>New York Times</i> bestselling picture books, including <i>Click, Clack, Quack to School!</i>; <i>Click, Clack, Surprise!</i>; <i>Click, Clack, Ho, Ho, Ho</i>; <i>Click, Clack, Peep</i>; <i>Click, Clack, Boo!</i>; <i>Dooby Dooby Moo</i>; <i>Thump, Quack, Moo: A Whacky Adventure</i>; <i>Bounce</i>; <i>Wiggle</i>; <i>Duck for President</i>; <i>Giggle, Giggle, Quack</i>; <i>Bloom</i>; and the Caldecott Honor Book <i>Click, Clack, Moo: Cows That Type </i>as well as The Chicken Squad series and <i>Cyclone</i>. She lives in Brooklyn, New York. Visit her at DoreenCronin.com. <p/>Betsy Lewin is the Caldecott Honor-winning illustrator of <i>Click, Clack, Moo: Cows That Type</i> and its sequels, including <i>Click, Clack, Quack to School!</i>; <i>Click, Clack, Ho, Ho, Ho</i>; <i>Click, Clack, Peep</i>; <i>Click, Clack, Boo!</i>; <i>Giggle, Giggle, Quack</i>; <i>Duck for President</i>; <i>Dooby Dooby Moo</i>; and <i>Thump, Quack, Moo</i>; in addition to a number of other picture books, including <i>So, What's It Like to Be a Cat?</i> and <i>Where Is Tippy Toes?</i>. She lives in Brooklyn, New York.