I remember reading a detective story by Edgar Allan Poe (the name escapes me, but whatever) and the murderer turned out to be a orangutan. I thought it was the most retarded, unbelievable bullshit ever, until a few weeks later when this happened.
Very similar incident, only 3 years ago... and while his face did get moderately ripped up, probably not as bad as the lady in this story, he lost a fucking testicle.
A TESTICLE.
Chimps are badass, straight up, and I've learned to leave those fuckers alone after all these shenanigans.