Neko is a cross-platform open-source[1][2] animated cursor-chasing cat screenmate application.
Neko (猫, ねこ) is the Japanese word for cat.
It was later ported as a desk accessory to the Macintosh in 1989 by Kenji Gotoh.
In the System 7 version, the pointer could be modified to various cat toys such as a mouse, fish, or bird.
When Neko caught up with the pointer, it would stare at the screen for a few seconds, scratch an itch on its body, yawn, and fall asleep until the pointer was disturbed.