Can you remember this sheep in the year '95?
It is/was a sheep able to walking on your taskbar. Because it was a 16-bit application, it doesn't work anymore on Windows 7/8/10. And because I missed this sheep so much, I wrote a simple application to reproduce a little bit what this sheep was able to do.
The entire project is Open Source and can be found here: https://github.com/Adrianotiger/desktopPet
The home page, for this project can be found here: http://esheep.petrucci.ch
I tried to make this application flexible, to allow more pets (not only a sheep). On the webpage you will find an editor, so you can create your own pet and publish it so everyone can download your animation.
This application is not a game. It is not an utility. You will only loose your time downloading it, but if you are here you have enough time for this kind of applications :P