Slytherin is one of the four houses of Hogwarts School of Witchcraft and Wizardry and it was born under Salazar Slytherin, from whom it gets the name. The house especially values ambition and determination. Its symbol (animal) is the snake and its colours are green and silver. The Bloody Baron is the house ghost.
The Slytherin Common Room (the place where the Slytherin students spend their time and do their homework) is in the dungeons of Hogwarts and is placed under The Black Lake, in the school grounds.
The house has a negative reputation, with a lot of people saying that it is the house from where almost all dark wizards in Britain, notably Tom Riddle (Voldemort), came from.
The house is usually in competition with the Griffindor house, as they "don't like each other on principle".
The house is usually in competition with the Griffindor house, as they "don't like each other on principle".
The head (ruler) of Slytherin house is Severus Snape and in the 7th book Horace Slughorn.
