Marion Johnson is the author of Caillou in the Garden , Caillou Learns to Skate , Caillou: The Circus Parade , and Caillou: The School Bus . She lives in Toronto, Ontario. Eric Sevigny is a graphic artist and the illustrator of numerous Caillou books, including Caillou: ABC Train , Caillou: Every Drop Counts , Caillou: My First Coloring Book , and Caillou: The Magic of Compost . He lives in Montreal, Quebec.