Mark Tatulli is an internationally syndicated cartoonist best known for his popular comic strips Heart of the City, which chronicles a fun-loving, tenacious little girl's adventures in the big city of Philadelphia, and Lio, which tells the adventures of a young boy and his pet squid. In addition to cartooning, Tatulli is an accomplished filmmaker and animator, and the recipient of three Emmy Awards. He lives in New Jersey with his wife, Donna, three children, and three nefarious cats, all of whom supply endless ideas for his books.