Fans of the show are taking to social media to reflect on the impact it had on their lives.

Arthur followed an aardvark by the same name as he and his friends grew up.

The show's track record of broaching difficult conversations was revered. It made history when Mr. Ratburn, Arthur's teacher, came out as gay and got married.

They got arcs, interiority, and plots that presented elements.

—Thatch, a tired Zebra ♿️ (@TwoBladeBae) February 21, 2022

The New York Times quoted Brown as saying that the books Arthur was based on are still helpful and relevant to kids. It gets a lot of positive feedback when we run episodes like the one on head lice, because it is still an ongoing problem for a lot of kids.

—aMucc (@amurkymuc) February 21, 2022

Arthur became part of meme culture in 2016 when an image of him making a fist went viral as a way to show frustration among young adults.

The final episodes of the longest-running animated children's show in history aired on Monday. The show will end in July.

The first episode of Arthur aired in 1996 and won four Daytime Emmys. PBS Kids has re-runs of the show.