Music by Rich Mendoza
Lyrics by Rich Mendoza
Date 1997

"Cats at Play" is a song that the Cat in the Hat sings with the Little Cats about all the fun they have playing their types of games. They enjoy playing with string, putting on plays and other stuff. One of the Little Cats is shown playing a puzzle with Mr. Knox and Fox in Socks.

The song is featured in the Wubbulous World of Dr. Seuss episode "Cat's Play".