Woman bites off sister's nose

[Joe the Destroyer]

http://www.msnbc.msn.com/id/34945174/ns/us_news-weird_news/

I can never understand why people do this.  There are much easier methods of assault. 

Always makes me think of this:

http://www.youtube.com/watch?v=xGREfOsyY_o

[Mr. DS]

Biting is the utmost form of dirty fighting.  People's mouths are not pretty places and many bites end up leave more than just a mark.

[Javakoala]

Biting is an animalistic response while fighting.  It is in all of us.  It is just that most of us are able to resist the urge when we fight.  Others...not so much.

[indianasmith]

She must have done it to spite her face.