"Doug's Secret Christmas" is the 15th episode of Doug in the Disney era. It first aired on December 14, 1996, on ABC.
With a new baby on the way, Doug's family is too busy to have a traditional Christmas and Doug wants one. So Doug and Porkchop decide to have their own secret holiday celebration in his room. But when he later finds the house completely empty, Mr. Funnie phones with news, and Doug's and Judy's baby sister, Dirtbike, is born on Christmas Day. Meanwhile, Fentruck tells all his friends how they spend Christmas in Yakestonia.
- In the October 1996 issue of "Disney Adventures" magazine, the "Name Doug's Brand Spanking New Baby Contest" was featured. To enter the contest you chose a gender as well as a name for the new baby in season 5. The winner got the honor to actually name the baby for the show. In the May 1997 issue of "Disney Adventures", the results from the contest were released and Brett Chatham of Blairsville, Georgia was the winner; the name he choose was, of course, Cleopatra Dirtbike Funnie.
- The episode first aired in primetime on Saturday December 14, 1996 at 8:00pm on ABC; it aired again on Saturday December 21, 1996 in its regular timeslot at 8:30am.
- The story at the beginning of the episode is based on "How the Grinch Stole Christmas", with Roger being "The Grinch" and the story told through the voice of a narrator.