There used to be this old virtual pet application called, I think, "Tama Tama" that revolved around a small, white ball with two black eyes. It bounced around the screen and pooped, and you just had to clean up after it and feed it. You could also bounce it around on your cursor. Depending on its diet, it would change color gradually over time and would also grow larger.

Does anyone remember this and/or would be able to upload it? I've searched everywhere and can't seem to find it anymore.