My second article is about ‘The Black Cat’ as well. It discusses that the story plays with the idea of fear and anxiety. It shows that throughout the story the narrator does not question himself, until the end; that is when the anxiety prevails. Poe does not deal with morals in his stories, but instead with the psychological aspects of his characters. This article also discusses the subject that the nameless narrator does not name his wife, but only gives the cat a name, which also separates himself from sanity and society.
via Academic Article 2.