The enotes to Gothic literature make mention of the element of "privileged irrationality and passion over rationality and reason." This chaos of irrationality seems to be what moves the plot of "The Black Cat" by Poe and is its most salient feature. Even the narrator suggests his own abnormality:
Hereafter, perhaps, some intellect may be found which will reduce my phantasm to the commonplace....Some calmer intellect, more logical, less excitable than mine will perceive...nothing more than an ordinary succession of very natural causes and effects.
That the narrator is "friends" with the cat in the beginning, yet he "maltreats" it by "a fiendish malevolence" in his "frame" which induces him to cut one of the cats eyes out points to his "privileged irrationality." In a chaos of confusion, the next day he feels some remorse for his act. Nevertheless, he subsequently hangs the cat
because I knew that it had loved me and had given me no reason of offense--hung it because I knew that...
(The entire section contains 2 answers and 753 words.)