<P> Hufflepuff values hard work, patience, justice, and loyalty . The house mascot is the badger, and canary yellow and black are its colours . The Head of this house is the Herbology teacher Pomona Sprout, and the house ghost is The Fat Friar . According to Rowling, Hufflepuff corresponds roughly to the element of earth . The founder of this house is Helga Hufflepuff . </P> <P> The entrance to the Hufflepuff dormitories and common room entrance is concealed in a pile of large barrels in an alcove in the corridor that holds the kitchen . To enter, one must tap the barrel two from the bottom in the middle of the second row in the rhythm of "Helga Hufflepuff". Unlike any other house, the Hufflepuff common room has a repelling device that douses the illegal entrant in vinegar if the wrong lid is tapped or the rhythm is wrong . The Hufflepuff common room is filled with yellow hangings and fat armchairs and it has little underground tunnels leading to the dormitories, all of which have perfectly round doors, like barrel tops . </P> <P> Ravenclaw values intelligence, creativity, learning, and wit . The house mascot is an eagle and the house colours are blue and bronze (blue and grey in the films). The head of this house is the Charms professor, Filius Flitwick, and the house ghost is The Grey Lady . According to Rowling, Ravenclaw corresponds roughly to the element of air . The founder of this house is Rowena Ravenclaw . </P> <P> The dormitories are in Ravenclaw Tower, on the west side of Hogwarts . The common room, which went undescribed in the series until the climax of Deathly Hallows, is round and filled with blue hangings and armchairs, has a domed ceiling painted with stars and features a replica statue of Rowena wearing her diadem . Harry also notes that Ravenclaws "have a spectacular view of the surrounding mountains". A logical riddle must be solved to gain entry, whereas the Gryffindor and Slytherin common rooms only require a password (Hufflepuffs need to tap a barrel in the rhythm of "Helga Hufflepuff"), indicating that it may be easier for those students from other houses who possess a high degree of intelligence to enter this common room than others . Professor McGonagall, the head of the Gryffindor House, solves the riddle accurately . </P>

What do all the houses mean in harry potter