She exhaustively details her fascinating results in The Alex Studies . Since working with Pepperberg, he has developed a 100-word vocabulary and can identify 50 different objects, recognizing quantities up to six, distinguishing seven colors and five shapes, and understanding the difference between big and small, same and different, over and under. He can tell you, for instance, that corn is yellow even if there is no corn in view, as well as correctly select the square object among various shapes and identify it verbally. This is not light reading, particularly for the layperson. Still, The Alex Studies manages to be more than a valuable contribution to science, for in providing ample evidence of our similarities to other creatures, the book ultimately calls into question the concept of human supremacy over the animal kingdom.
Most evolutionary biologists agree that what makes humans unique among animals is our brainpower.
Stanford studied the great apes, especially chimpanzees, and came to the conclusion that among primates, meat is a valuable commodity both nutritionally and socially. The end of the hunt is often only the beginning of a whole other arena of social interaction. In Stanford's view, females play a crucial role in keeping groups together and cementing individual relationships. Meat plays an important role in the way males fit in to a society, and the ability of males to get meat readily may very well explain their societal dominance. The Hunting Apes is an interesting look at what is likely the worthwhile center of a discredited evolutionary theory.