As a result of this film, Audrey Geisel, the widow of Dr. Seuss decided to reject any consequent live-action adaptations of her husband's work claiming that this film differed from her late husband's Family Friendly Material.
Among the props stolen from the production were an 8-foot pair of glasses, a 6-foot by 4-foot by 8-foot anvil, a 4-foot key and a golf ball 7 feet in diameter that weighed more the 200 pounds - total value: $55,000. The stolen props where later found at mall dumpster, covered in graffiti.
The pink-housed village was built especially for the movie in the Moorpark, California area, on a hillside just south of the 118 freeway. When it was first constructed many local residents complained to their elected officials that such an eyesore had been allowed to be built, but were assured that it was just a movie set built and that it would be torn down upon completion of filming which, by December 2002, it was.
The Cat costume is made of Angora and human hair and was fitted with a cooling system. To keep Myers cool during the outdoor shoots, a portable air conditioner was available that connected a hose to the suit between shots. The tail and ears were battery operated.
The downtown area outdoor shots were filmed along a Pomona, California street where a number of antique and gift shops are located. The community decided not to redecorate after filming ended, so the surreal paint scheme and some of the signage can still be seen as it appears in the movie.
EASTER EGG: In Sally's menu on the DVD, when the icon is on the hat symbol, push the right button. A symbol resembling a dog will appear next to Sally. Click it and a featurette about Nevins will play.
The Cat and his accessories (the Things, his lawyers, props) are the only things with the color scheme of white, red, and black. This was done so the Cat would pop out more in the movie as a colorful character.
The scene where the Things "clean" the house, moving the spots from one area to another, was inspired by the book sequel, The Cat in the Hat Comes Back, where the Cat moves cake stains from one spot to another.