text: Another 26 episodes were produced and broadcast from 2001 to 2003. "Chicken Scratch" debuted theatrically with The Powerpuff Girls Movie in 2002, and was later broadcast in season four.
  Broadcast
  Dexter's Laboratory premiered on February 26, 1995, on Cartoon Network as part of What a Cartoon!. On December 31, 2000, Cartoon Network aired its "New Year's Bash" marathon featuring Dexter's Laboratory among other programs. On November 18, 2001, it broadcast a 12-hour "Dexter Goes Global" marathon in 96 countries and 12 languages. This marathon featured fan-selected episodes of Dexter's Laboratory and culminated by premiering two new episodes of season 3.
  From 2005 to 2008, Dexter's Laboratory was rerun in segments on The Cartoon Cartoon Show with other Cartoon Cartoons from that era. From 2012 to 2014, it returned in reruns on the revived block, Cartoon Planet.
  From January 16, 2006, to June 7, 2021, Dexter's Laboratory aired reruns on Boomerang.
  Cartoon Network has aired reruns in Canada since its launch on July 4, 2012. This launch was commemorated by parent network Teletoon, which aired Cartoon Network-related programming blocks and promotions in weeks leading up to it, including episodes of Dexter's Laboratory.
  Dexter's Laboratory currently airs in reruns on Checkered Past on Adult Swim.