If a person's life is only focused on basic survival needs, how does the Satcharitra differentiate them from an animal?

According to Chapter 8, if a human's life is centered only on the four activities of eating, sleeping, fear, and mating, then there is essentially no difference between that person and an animal like a dog or a pig. The text explicitly states, 'Dogs also fill their bellies and reproduce plenty; wherein lies the greatness of the human body if both are in the same state?' It challenges the reader to use wisdom to see that if nourishing the body and sexual pleasure are the only goals, then the human birth is rendered useless. The key differentiator is the human capacity for spiritual inquiry and the attainment of the Supreme Self, which animals do not pursue.