An award-winning children's book illustrator and writer, he is best known for such works as A Bad Case of Stripes (2002) and No, David! (1998). He also illustrated author Melinda Long's Pirate books.
He attended the Art Center College of Design in Pasadena, California. Later, he moved to New York to pursue journalistic work.
In addition to children's works, he created editorial illustrations for the New York Times and Rolling Stone magazine.
He was born in Washington, D.C., but grew up mostly in Spokane, Washington. He and his wife, Heidi, settled in Los Angeles with their daughter, Emma.
Hans Willhelm, another children's book illustrator, is perhaps best known for his Where's Waldo series.