Angier, Natalie. “Pigs Prove to Be Smart, If Not Vain.” New York Times 10 Nov. 2009: D1.The New York Times. 9 Nov. 2009. Web. 28 Mar. 2014. Brix, Lise. “Humans Have Added New Bones to the Pig.” Sciencenordic.com. N.p., 16 Nov. 2012. Web. 15 Apr. 2014. Butler, Chris. “The Flow of History.” FC5: The Domestication of […]