Why does the teaching in the source material suggest that a life focused only on survival is no better than that of an animal?

The teachings in Chapter 8 argue that a life centered on basic survival instincts fails to utilize the unique potential of human birth. The text rhetorically asks what dogs and pigs lack in terms of mere survival, noting they also fill their bellies and reproduce. If a human life is also limited to these functions—eating, sleeping, fear, and mating—then the text claims there is no greatness in the human body. This comparison is used to provoke critical thought and emphasize that the true duty of a human is to achieve something animals cannot: the attainment of the Supreme Self (Paramatman).