The Nundu is a large East African beast that resembles a leopard. It moves silently, despite its "gigantic" size, and is considered by some to be the most dangerous creature alive. The breath of the Nundu is toxic and filled with disease so potent that it can wipe out entire villages of people. The Nundu is extremely hard to subdue, and has never been defeated by less than around one hundred wizards working together. Compared to the dragons used in the Triwizard Tournament, which were stunned into submission by around ten wizards, the prospect of this rare beast becomes truly terrifying.
Eldon Elsrickle owned a Nundu, which he received as a cub during a voyage to Africa to evade capture for a series of robberies he had committed. He used this Nundu to protect his home and the large treasure he had accumulated inside it from robbing other London residents with his newly-learned Unlocking Charm, keeping it subdued with a daily Stunning Spell when he was home, and reviving it when he left. One day, however, when he found that all the houses in the neighbourhood were protected by a new Anti-Alohomora Charm invented by Blagdon Blay, he was so infuriated upon returning home that he neglected to Stun his Nundu, and was swiftly killed by the beast.
The Nundu is a Class XXXXX.