Season 5

Season 5 of premiered in the United States on September 25, 2000  on PBS starting with "Arthur and the Big Riddle" and ending on November 27, 2000 with "Muffy Gets Mature". The TV special "Arthur's Perfect Christmas" premiered alongside this season, with its debut on November 23, 2000.

This was the final season with Michael Yarmush as the voice of Arthur, due to his voice maturing months shortly after Season 4 ended. Sound effects of Yarmush's yelps and screams from Season 1 were used for Arthur as well to cover up. It was also Steven Crowder's first season as Brain. It was also the last season to use cel animation.

"Arthur's New Friend" was released around this time, but is not considered part of the season.