Bob Shea is the author-illustrator of four Dinosaur vs books, and many other picture books, including I'm a Shark (Balzer and Bray). He also wrote Big Plans, illustrated by Lane Smith. Dinosaur was inspired by his son, Ryan. Bob is an eager and talented promoter of his books. He has his own graphic design company and lives in Connecticut.

Brian Won has worked as a busboy, library shelver, and currently is working as an art director and illustrating books for children. He graduated from California's Art Center and his awards include The Society of illustrators Silver Medal and the Crystal Kite from the Society of Children’s Book Writers and Illustrators. He lives in California with his wife and son.