2. Kingdom Anamaila Pal Science. “African Lion." No date. Online image. Monkey Picture Gallery. 11 May 2010. <http://palscience.com/science/ultra-high-reselution-pictures-of-the-animal-kingdom/>.
3. Bilateral Symmetry Ahmad Ali Karim. “Pretty Butterfly." February 2009. Online image. Pictures. 11 May 2010. <http://ahmadalikarim.wordpress.com/2009/02/>.