At least some content in this article is derived from information featured in the latest update of Pottermore. As such, spoilers will be present within the article. Please take care when reading this article if you have not yet been through the latest update.
The rougarou is a creature that features in Cajun folklore. It is a werewolf-like creature generally described as having the head of a dog and the body of a human. Its name derives from loup-garou, the French word for "werewolf," which is itself derived from loup, "wolf," and garou, "man who turns into a beast."