the donkey from 1.6! in minecraft the donkeys are smaller then horses, but i dont know the real scale. (the same is with cave spiders) if you print it smaller remember that you have to make the saddle smaller too!
update: uploaded a photo!
1. Click on the papercraft design image.
2. Make sure it has not been resized by your browser (you might need to click the image again).
3. Print using your browser's Print function.