The three-headed guard dog who guards the underworld is called what?

• A. Chimera
• B. Cerberus
• C. Hydra
• D. Sphinx

Answer: (B)

Cerberus is the three-headed guard dog of the Greek underworld. In myths, he stands at the gates of Hades, keeping souls from leaving and ensuring nobody escapes the realm. He’s typically described as a formidable multi-headed hound, sometimes with serpentine features or a serpent tail, which helps explain why he’s the guardian of the afterlife.

Chimera, Hydra, and Sphinx are different beings with distinct roles and forms: Chimera is a fire-breathing composite monster, Hydra is a many-headed water serpent that regrows heads, and the Sphinx is a guardian creature with a human head and a lion’s body famous for its riddles. Cerberus uniquely fits the description of a three-headed guard dog for the underworld.