Cerberus, the dog of Hades: The history of an idea

The study traces the evolution of the three-headed guardian of the underworld from early mentions in epic and lyric through visual art to later Roman and modern interpretations. It surveys ancient textual attestations and genealogies, poetic and sculptural depictions, and the treatment of the monster in the Heraklean descent motif; it shows how Greek sources left his form fluid while Roman poets fixed the tricephalous image. The author examines ritual, iconographic, and rationalizing explanations offered by classical commentators and modern scholars, and discusses how artistic convention, literary invention, and allegory shaped a shifting mythic figure.