Wim Delvoye's Tattooed Pigs.

Wim Delyove Delvoye is a Belgian artist who is famous for having unconventional art projects (such as cloaca, a machine whose sole purpose is to digest food and produce feces).

Wim has also been tattooing pigs (yes, oink oink pigs) since the 1990s. He could only do this in his "art farm" in China, where

Wim Delvoye [wiki] | Tattooed pigs photos at Cellar Image of the Day | Lenin Tattoo on pigs

Update 7/21/06: Wim's cloaca machine website: Link - Thanks for the name correction & link, Uw Moeder!