How did Harry and Ron get on Argus Filch's wrong side the first morning of classes? He found them trying to force their way through the out-of-bounds, third floor corridor. He said to meet in the trophy room, but instead told Filch that someone would be sneaking into there.
While he is a guest at Hagrid's, Harry learns that while drunk and playing cards, Hagrid revealed to Voldemort that anyone can get past the three-headed guard dog, Fluffy, by playing music to him. Harry plays a flute he has brought, putting Fluffy to sleep and allowing his gang to go through the trapdoor.
In chapter 9, Harry, Ron, Hermione, and Neville find a three-headed dog in the forbidden third-floor corridor, guarding a trapdoor.
The Philosopher's Stone was a legendary alchemical substance with magical properties. This ruby-red stone could be used to create the Elixir of Life, which made the drinker immortal, as well as transform any metal into pure gold.
What does Harry see in the Mirror of Erised? In the mirror, Harry encounters the Potter family for the first time in his life. Most prominently he sees his mother and father smiling down at him and it is this that is 'nothing more or less than the deepest, most desperate desire' of young Harry's heart.
The Third-Floor corridor hides a trapdoor leading to the Underground Chambers, guarded by Fluffy.
Fluffy is an extremely large three-headed dog, apparently loyal to Hagrid. He is apparently modeled on Cerberus, the three-headed dog who guards the entrance to the Underworld in Greek mythology.
After Fluffy's duties were done, and the Stone was destroyed, Hagrid set Fluffy free temporarily in the Forbidden Forest. Shortly thereafter, he was sent back to his native Greece by Dumbledore.
The Hogwarts library is located on the fourth floor. Dumbledore stored the Mirror of Erised in an unused classroom on this floor as well. Harry used this shortcut to chase Snape after Dumbledore's death (HBP28).
However, he was still fairly tall, as he is mentioned as being taller than Harry Potter. As a result of an injury from Severus Snape's Sectumsempra during the Battle of the Seven Potters, George has lost one of his ears, briefly distinguishing him from his identical twin until Fred's death.
Not sure where they are going, they accidentally end up in the forbidden area on the third floor, staring at a large and scary three-headed dog. Hermione reprimands Harry but stirs his curiosity by pointing out that the dog was standing on a trapdoor.
Harry plays in the Gryffindor Quidditch team as Seeker from year 1 (Harry Potter and the Philosopher's Stone) to year 6 (Harry Potter and the Half-Blood Prince), being team captain in year 6. Draco Malfoy plays opposite him on the Slytherin team, starting with year 2 (Harry Potter and the Chamber of Secrets).
In 1993, Sirius Black entered Hogwarts Castle and attacked the Fat Lady when she refused to give him passage to Gryffindor Tower.
Spinner's End is a street on which the childhood home of Severus Snape is located. It is stated to be one of several streets lined with deserted brick houses and broken streetlamps, near a dirty river and an abandoned mill with a tall chimney. It is located in Cokeworth.
During Harry Potter's first flying lesson, Madam Hooch had to leave the class unattended when Neville Longbottom crashed and fell from his broomstick. In her absence, Draco Malfoy discovered a Remembrall that Neville had dropped, and flew off with it when Harry demanded it back.
Fang was said to be born in 1984 and became one of Hagrid's pets shortly after. The dog was an over-sized black Boarhound, aka a Great Dane. In the films, Fang was portrayed by a Neapolitan Mastiff, an entirely different breed. The dog lived with Hagrid in the hut that resided on the edge of the forest.
Dogs in the wizarding worldRubeus Hagrid, Hogwarts gamekeeper also had a boarhound named Fang. There are also magical subtypes of dogs, such as three-headed dogs,Gytrash and Grim.
In Greek mythology, Cerberus (/ˈs?ːrb?r?s/; Greek: Κέρβερος Kérberos [ˈkerberos]), often referred to as the hound of Hades, is a multi-headed dog that guards the gates of the Underworld to prevent the dead from leaving.
TIL Cerberus is a female.
Of the three main characters in the Harry Potter universe, Hermione has to be the most important. On April 16, Hermione is attacked by a mountain troll in Hogwarts. Harry and Fred and George Weasley come help her. They fight and kill the troll but Hermione dies of her injuries.
KEREBEROS (or Cerberus) is a greek mythological three headed creature or dog that was tied up by a greek hero called Heracles and which guarded the gates of the underworld. It was said to be found in Greece and Italy. After being given the task he went to Eleusis to learn on how to enter the underworld alive.
Snape then asks if the reason to keep Harry alive was to kill him at the right time. Dumbledore asks in response if he has finally taken a liking to Harry, to which Snape responds by conjuring Lily's doe-shaped patronous, meaning that he has and always will love Lily, and is his sole reason to protect Harry.
Rubeus Hagrid: Well, he wanted to know what sort of creatures I looked after. I told him. I said, "After Fluffy, a dragon's gonna be no problem."
In Harry Potter and the Deathly Hallows, Fang and Hagrid participate in the Battle of Hogwarts; though Fang's exact involvement is not clear. He is last seen running away after a shattered vase frightens him. It's implied that Fang survives, as Hagrid is not seen mourning him at any time.
