I completely forgot about friday, my own virtual cat, who lives on my About page! Bad kitty mistress, bad kitty mistress!
friday is a flash kitty (so if you don't have flash enabled, you will not see her) from bunnyhero labs. They also offer a puppy, duck, bunny, and penguin (one of which lives at Abide.) These are all interactive, and you can choose what color you would like yours to be.
I bet you can guess why she's named friday.
ADDITION Saturday 16 October 02004:
Click your mouse on various parts of the Blog Pet picture, and it will talk to you.