The Cerberus, also known as a hellhound, was a mountain canine with multiple heads. Cerberus was the “watchdog” of the gates to the underworld for his master, Hades. He ensured that the dead could enter and never escape. The twelfth labour of Hercules was to capture the Cerebus from hell and bring him to the palace of Eurystheu. Hades agreed on the condition that no harm would be done to the animal. The three heads of the Cerberus symbolizes the baser forces of life: the past, the present, and the future.
Origin: The Cerberus, like many monsters in mythology, was the offspring of Echidna and Typhon. One of his siblings, Orphus, was also a dog-like creature, but with only two heads.
Appearance: Cerberus is mostly portrayed as a dog with three heads. Some have that the total number is fifty or one hundred. He also possesses the tail of a serpent. The actual size of the Cerberus is unsure, but all accounts say that he is very large.
Influences On The Modern Day: There aren’t many stories of the Cerberus now as there used to be, but there is one major influence of it on the modern day: a three headed dog from the book Harry Potter and the Philosopher’s Stone named Fluffy. Though this isn’t actually stated as a real Cerberus, Fluffy takes on the same form and has a similar job, to guard the trapdoor leading to the underground chamber where the Philosopher’s Stone is hidden.