Final answer:
The narrator's statement juxtaposes the natural, instinctive actions of animals, such as bats, with the more complex and emotion-driven actions of humans, critiquing the human tendency to impose moral judgments and engage in unnecessary cruelty.
Step-by-step explanation:
The narrator's statement, "Bats have a few things to put up with, but they do not inflict. When they kill, they kill without mercy, but without hate," highlights a stark contrast between the instinctive nature of animals and the often complex, emotion-driven actions of humans.
This is seen in various literary works, where the cruelty and moral shortcomings of human behavior are juxtaposed with the straightforward, survival-driven actions of animals. For instance, Cavendish's poem illustrates this by portraying men as "bloodthirsty monsters" who kill for sport, while animals, represented by a hare, are humanized and their killing depicted as murder, thereby critiquing the human tendency to dominate through violence.
Other literature, such as Nietzsche's parable, questions the projection of morality onto the natural actions of animals, and through various comparisons - like between humans and a blacksnake, or beetles - illustrates how human morality might complicate our perception of natural behaviors. The narrator's comment on bats emphasizes that their lethal behaviors are a simple matter of existence, whereas human actions often carry layers of unnecessary cruelty or imposed moral judgments. This connection underlines the inherent value in all life—human and animal—challenging readers to reconsider the morality behind the violence inflicted on other creatures.