John Sullivan earned a master’s degree in English from the University of Illinois at Chicago. His debut picture book, Kitten and the Night Watchman (Simon & Schuster 2018), won the Ezra Jack Keats Award and the Margaret Wise Brown Prize. His second book, Stanley’s Secret (Simon & Schuster 2023), earned a starred review from Publishers Weekly. His third book, Ethan and the Strays (Simon & Schuster 2023), is forthcoming, as is Pet Parade (Simon & Schuster, tbd). He lives with his five cats in Chicago, where he learned to love picture books while reading them to his four nieces.