|"3rd Grade Female Cat" is not an official name.|
|It may have been referenced in the storyline as such, but has not been officially named. Alternatively, it may be a name popular among fans, but has no official basis.|
|3rd Grade Female Cat|
|Cartoon debut||"Arthur's Eyes"|
"3rd Grade Female Cat" is an unnamed third grader who made her debut in the episode "Arthur's Eyes".
Despite making many recurring appearances throughout the series, she has never spoken in any of the series' episodes. She often hangs out with other background characters and with most if not all the main characters.
3rd Grade Female Cat is a tanned cat that wears a red jacket with a single gold stripe on the sleeves and near the bottom of the jacket, a white shirt underneath her jacket, beige khakis, and red and white shoes.
She wears rectangular lensed glasses with the frame of the glasses being gold colored and she has long red hair. She also wears a beige maillot, which was first shown in the episode "D.W.'s Backpack Mishap".
- She also bears a striking resemblance to Aloysius Zimmerplotz, but is not the same person, although he could be related to her.
- She is in Mrs. Fink's class.
This list is incomplete. Please add to it if you know any more appearances.
- Arthur's Eyes (episode)
- Arthur's Substitute Teacher Trouble
- Elwood City Turns 100!
- D.W.'s Backpack Mishap