These virtual cats are very cool because they are independent (like real cats). They are alive & animated, doing their own thing. They also need someone to care for them, or they run away... considering themselves abandoned cats!
Check out the video showing a black & white cat live in Second Life. A nice thing about our original cats is they don't cost L$ (Linden Dollars) to feed. All care costs (including pet food) is absolutely free at The LOLO making these cats the affordable choice.