The question is whether studying animals can teach us about human nature. The most common answer is "yes." We share 98% of our DNA with chimpanzees, and our brain structures are similar not only to other mammals but also to birds and other kinds of animals. Therefore, observing their behavior might be able to help us understand ourselves. Watching how our closest relatives -- the pacific bonobos -- keep the peace might help us to mediate our own disputes without so much warfare.
From the opposite viewpoint, human beings are so different from other animals that observing them cannot teach us about ourselves. Can observing squirrels help us understand fish? If not, then maybe observing elephants cannot help us understand people. If you are going to argue that we can learn about people by studying animals, then you may want to address the ethical questions associated with doing so. Observing animals in their natural habitats hurts no one, but removing animals from their homes to study them in laboratories, even if the experiments themselves are not painful, does damage to them. If they are so like us that we can learn about our nature from them, is it fair to do to them what we would never do to other people?
Simone, EssayForum.com