Nagini: Name of a very large, venomous snake kept by Voldemort. N.E.W.Ts: Nastily Exhausting Wizarding Tests. Higher-level examinations at Hogwarts. Nearly Headless Nick: Resident ghost of Gryffindor Tower. So called because his beheading was not completely successful. Full name is Sir Nicholas de Mimsy-Porpington. Niffler: Magical creature that can find buried treasure. Nifflers are black and fluffy with long snouts and spadelike feet. Nimbus 2000: Type of broomstick. Harry's first broomstick. Nimbus 2001: The successor to the Nimbus 2000 broomstick. Norbert: Name of Hagrid's Norwegian Ridgeback dragon. Norris, Mrs: Name of Filch's cat. She is a scrawny-looking, dust-coloured cat with bulging eyes. Students must be wary not to break rules in front of her for she will run to Filch and report them. Norwegian Ridgeback: Breed of dragon that is very rare. Hagrid had one as a pet for a while. Harry Potter and all related indicia are trademarks of Warner Bros. © 2002 Warner Bros. All Rights Reserved. Harry Potter Publishing Rights © J.K.R.