This dude named Guillermo Habacuc Vargas apparently starved a dog he got off the street to death in front of people at a gallery as "art."
Snopes has the story as undetermined... However, this blog claims the artist himself admitted on his myspace page that the dog died. On top of that, apparently one of the artist's student has tried to surpass his teacher by biting a live chicken and cat and drinking their blood.
Wow, how the hell is this art? It's kind of lame to define art as things that provoke a response from the audience. At some point a line must be drawn, or isn't human torture some sort of art too?