Apologue

An apologue or apolog (from the Greek ἀπόλογος, a "statement" or "account") is a brief fable or allegorical story with pointed or exaggerated details, meant to serve as a pleasant vehicle for a moral doctrine or to convey a useful lesson without stating it explicitly. Unlike a fable, the moral is more important than the narrative details. As with the parable, the apologue is a tool of rhetorical argument used to convince or persuade.