Diabloii.Net has word that at long last Blizzard seems to have rectified the error they made when they failed to include a cow level in Diablo III. They offer a link to this video showing the bovine beauty of all this, and the following explanation of how you can move on to greener pastures in the action/RPG sequel:

To make this happen you need to:

• Go to the Immortal Throne in Sescheron, Act 3.
• Kanai’s soul will wake up and open a portal
• Enter the Stomping Grounds and fight Kanai.