The rougarou (alternatively spelled as roux-ga-roux, rugaroo, or rugaru) is a legendary creature in Laurentian French communities linked to European notions of the werewolf.
The stories of the creature known as a rougarou are as diverse as the spelling of its name, though they are all connected to francophone cultures through a common derived belief in the loup-garou (French pronunciation: [lu ɡaˈʁu], /ˈluː ɡəˈruː/). Loup is French for wolf, and garou (from Frankish garulf, cognate with English werewolf) is a man who transforms into an animal.
Rougarou represents a variant pronunciation and spelling of the original French loup-garou. According to Barry Jean Ancelet, an academic expert on Cajun folklore and professor at the University of Louisiana at Lafayette in America, the tale of the rougarou is a common legend across French Louisiana. Both words are used interchangeably in southern Louisiana. Some people call the monster rougarou; others refer to it as the loup-garou.
The rougarou legend has been spread for many generations, either directly from French settlers to Louisiana (New France) or via the French Canadian immigrants centuries ago.