
The pets he once held in highest affection become the thing he most loathes. Loyalty perverted: A pet is often seen as a loyal and faithful partner in life but the escalating hallucinations the narrator experiences propel him into murderous rages, first with Pluto and then with the cat the replaces him.Illusion versus reality: Does the alcohol release the narrator's inner demons, or is it merely an excuse for his horrendous acts of violence? Is the black cat merely a cat, or something embued with a greater power to bring about justice or exact revenge?.The question is what causes the narrator to become a killer. Murder and death: Death is the central focus of the entire story.Superstition: The black cat is an omen of bad luck, a theme that runs throughout literature.Justice and truth: The narrator tries to hide the truth by walling up his wife's body but the voice of the black cat helps bring him to justice.He forsakes the woman he loves-and eventually kills her because he can't break the hold of his destructive obsession.

His mistress, however, is not another woman, but rather his obsession with drinking and the inner demons his drinking unleashes as symbolically personified by the black cat. Instead, it is he who is in a sense unfaithful to his marriage vows. Loyal, faithful, and kind, she never leaves her husband no matter how low he sinks into the depths of depravity.

Even the relationships that should have been the central focus of his healthy and happy home fall victim to his deteriorating mental state. The narrator kills his favorite pet, tries to kill its replacement, and goes on to kill his own wife.

Like the bad omen of legend, the narrator believes Pluto and his successor have led him down the path toward insanity and immorality.

