Mackled Malaclaw tail

The tail of the Mackled Malaclaw, a crustacean land creature, can be used as ingredients in the brewing of certain potions.

The famous Potioneer Zygmunt Budge, at the age of fourteen as a Hogwarts student, once corrected his Potions Professor on the use of Mackled Malaclaw tails in potion-making. His superior knowledge of potions, their ingredients and many other things, inspired Budge to drop out of Hogwarts in order to enter the Wizarding Schools Potions Championship.