How does Chapter 8 differentiate human existence from that of animals like dogs and pigs?

Chapter 8 draws a sharp distinction between human life and animal existence by focusing on the ultimate purpose of birth. The text questions what greatness the human body holds if its purpose is limited to activities that animals also perform. As stated in Chapter 8, if life is merely about the four activities of eating, sleeping, fear, and mating, then there is no real difference between a human and a dog or a pig. The chapter posits that the true duty and unique potential of human birth is the attainment of the Supreme Self (Paramatman). This capacity for self-realization and the pursuit of the Eternal is what elevates human life beyond the mere biological survival that characterizes animal existence.