Three-Headed Dog

Three-headed dogs are very rare creatures in the Wizarding World. It is unknown if, like the Runespoor, each head serves a different purpose. Their great weakness is the inability to resist falling asleep to the sound of music.

Rubeus Hagrid once owned a three-headed dog named Fluffy, which he obtained from a Greek man he met at a pub. Fluffy served as one of the obstacles to the Philosopher's Stone in 1992.

Trivia

 * Three-headed dogs are inspired by the legend of Cerberus, a beast from Greek mythology that guarded the gates to the Underworld and was Hades' pet.


 * In the film adaptation of Harry Potter and the Philosopher's Stone, Hagrid gets Fluffy from "an Irish fellow". In the novel, Hagrid gets him from "a Greek chappie".