Brilliant Shrieking Shack Interior
The New Marauders
Shrieking Shack, Hogsmeade
Sirius Black - or Padfoot, as he was known by his fellow Marauders - undertook the lengthy and arduous task of becoming an Animagus while still a Hogwarts student. This impressive feat allowed him to assume the form of a shaggy black dog, which he used to accompany and protect his friend Remus during his werewolf transformations.