Doreen Cronin is the New York Times bestselling author of Diary of a Worm, Diary of a Spider, and Diary of a Fly as well as Click, Clack, Moo: Cows That Type, a Caldecott Honor Book, and Giggle, Giggle, Quack. She lives in Brooklyn, New York, with her husband and their daughters.

New York Times bestselling artist Harry Bliss is a cartoonist and cover artist for the New Yorker magazine. He is the author and illustrator of Bailey and Luke on the Loose and the illustrator of A Fine, Fine School by Sharon Creech, Which Would You Rather Be? by William Steig, Diary of a Worm by Doreen Cronin, and Louise, the Adventures of a Chicken by Kate DiCamillo. His self-titled single panel gag cartoon Bliss appears in newspapers internationally. He lives in New Hampshire. You can visit him online at harrybliss.com.