Here's a little more fuel for misandry (like we need anymore). Prepare to feel wildly intrigued and profoundly traumatized all at the same time. Appreciate the expediency and harsh pragmatism that evolution can sometimes have (thank God for the soft pragmatic side, too!).
Also: http://www.newscientist.com/article/mg20827893.700-why-incest-among-animals-cuts-male-sexual-aggression.html?DCMP=OTC-rss&nsref=online-news
Fish with a hook for a penis: http://news.ncsu.edu/releases/mklangerhans/
Chimp penis spikes: http://scientopia.org/blogs/scicurious/2011/03/11/friday-weird-science-penis-spines-what-are-they-really/
Also: http://www.newscientist.com/article/mg20827893.700-why-incest-among-animals-cuts-male-sexual-aggression.html?DCMP=OTC-rss&nsref=online-news
Fish with a hook for a penis: http://news.ncsu.edu/releases/mklangerhans/
Chimp penis spikes: http://scientopia.org/blogs/scicurious/2011/03/11/friday-weird-science-penis-spines-what-are-they-really/
