The Cat Fanciers' Association (CFA)
The Cat Fanciers' Association Web site has lots of pictures, as well as information on cat breeds, cat care, upcoming cat shows, and much more.

About Cats
All about feline companions.

I Love Cats
Free stuff for cat lovers.

The Winn Feline Foundation

Dedicated to the health of cats.

American Association of Feline Practitioners
The AAFP is like the American Medical Association for cat doctors, and has lots of good information regarding feline health.