Why does Chapter 8 compare humans to dogs and pigs, and what is the key difference it highlights?

In Chapter 8 of the Sai Satcharitra, the comparison of humans to dogs and pigs is a rhetorical device used to emphasize the potential waste of a human life. The text argues that if a person's existence is solely focused on the four activities of eating, sleeping, fear, and mating, then they are living in the same state as these animals. Dogs and pigs also fill their bellies and reproduce, so if that is the entirety of a human's life, then the human birth is rendered useless. The key difference, as highlighted in Chapter 8, is the human capacity for self-realization. The true purpose and duty of human birth is the attainment of the Supreme Self (Paramatman), a goal that distinguishes humanity from the animal kingdom and gives life its ultimate meaning.