Introduction
An ape is a primate whose appearance resembles that human being. Apes have no tails and most of them lived in Africa and Eastern Asia. Of the great apes, the only existing ones are chimpanzees, orangutans, bonobos and gorillas. On the other hand, hominids are primates who move/walk on two limbs. They are members of the great apes. However, this definition may not suggest that all hominids including the first ones walked on two limbs. (Juan, Ignacio and Mauricio, 2006). Many paleoanthropologists believe that hominids are the immediate ancestors of the modern human beings. In many cases, it is hard ...