Cartoon-A-Doodle-Doo is a former one hour (6:00 am - 7:00 am) early morning Cartoon Network block that aired Monday through Friday from 1997 to December 30, 1999. Cartoon-A-Doodle-Doo featured many classic Hanna-Barbera cartoons such as: The Yogi Bear Show, The Huckleberry Hound Show, The Atom Ant/Secret Squirrel Show and Wacky Races, among others.