Human bias in selecting which is more important ? 
http://www.foxnews.com/story/0,2933,250002,00.html
http://webecoist.momtastic.com/2010/06/29/ugly-by-nature-the-worlds-13-ugliest-animals/
http://news.nationalpost.com/2012/04/23/too-cute-to-die-experts-say-were-too-selective-about-species-we-choose-to-protect/