Icon Bazaar
Some nice small clip art pictures of Cats.

Infinity clip art
Great selection of black and white clip art images. Find big Cats, house Cats, silly Cats and more.

AnimalPicturesArchive.com
14 large scale images of cat clip art. Good quality stuff.

A1clip art.com
Great animated cat clip art, there are 53 excellent images to choose from on this site.

Amy's Cat Graphics
This site consists of a tasteful collection of free cat graphics including backgrounds, clip art and animated cats.

CityWeb
6 pages of animated cat clip art.

StableGirl
Nicely drawn clip art of cats suitable for dark or light colored backgrounds.

Spiritonline
10 items of cat clip art.