The Nundu is a gigantic magical leopard, native to East Africa, which is considered by many to be the most dangerous beast in existence. Nundu’s breath carries disease and death and can swallow a group of people in one gulp (BoS). Whole villages have been wiped out by the creature, and it takes a hundred wizards working together to overcome the beast (FB). When the Nundu roars, a lion-like mane bursts forth from its neck (WFT).
In the early 1600s, a wizard thief by the name of Eldon Elsrickle brought a baby Nundu with him from Africa to London. The creature eventually grew large and deadly and killed the thief (BoS).