With its 25th season, Arthur, the longest-running children's animated series in American television history, has come to an end. The series, created by Kathy Waugh for PBS and produced by WGBH, follows a young aardvark named Aardvark and the lessons he learns from his friends and family as he grows up in the fictional Elwood City.

Arthur's final episode, titled "All Grown Up," aired on PBS on February 21 and followed Arthur, his sister D.W., Buster, Brian, Muffy, and Sue Ellen as they entered their twenties.

Arthur has become a graphic writer and has recently published his first book, according to the flash forward.

It reveals the group what he's working on as they reunite in Sugar Bowl Cafe, the dessert restaurant where they used to go as kids, and they all divulge what they've been up to. D.W. Francine works at a footwear manufacturer, while Binky is a news reporter and Buster is an English professor. Muffy becomes a politician and runs for mayor of Elwood City, while George runs a company (he bought the Sugar Bowl).

Arthur executive producer Carol Greenwald confirmed to Deadline that the show was concluding its run.

“Arthur is the longest-running kids animated series in history and is known for teaching kindness, empathy and inclusion through many groundbreaking moments to generations of viewers. In the winter of 2022, the 25th and final season of Arthur will debut. Arthur will continue to be available on PBS Kids for years to come. Producer GBH and PBS Kids are continuing to work together on additional Arthur content, sharing the lessons of Arthur and his friends in new ways.”

The children's show has received four Daytime Emmy nominations for Outstanding Children's Animated Program, as well as a Peabody Award and other honors. Michael Yarmush, Justin Bradley, Mark Rendall, Cameron Ansell, Dallas Jokic, Drew Adkins, William Healy, Jacob Ursomarzo, and Roman Lutterotti have all played the title character over the years.

Arthur has studied a variety of societal topics over the years. It most recently made waves in 2019 with an episode about a same-sex marriage between third-grade teacher Mr. Ratburn and chocolatier Patrick. "Mr." was the title of that episode. Alabama Public Television boycotted "Ratburn and the Special Someone."