Ferret

A Ferret is a small, rodent-like, four-legged mammal, which Hippogriffs enjoy eating. During the 1994 school year, Professor Moody (actually Barty Crouch Jr. using Polyjuice Potion) transfigured student Draco Malfoy into a white ferret and bounced him up and down (earning Draco the nickname of the amazing bouncing ferret), as punishment for attempting to attack fellow student Harry Potter. Professor McGonagall put a stop to this punishment and informed Moody that transfiguration is not to be used for punishment. During the 1995 school year, student Hannah Abbott accidentally turned a ferret into a flock of flamingos during her Transfiguration practical.