To prepare for his role, Mark Dacascos learned how to ride a horse, studied Mohawk Indian culture, and became fluent in French.
There actually was a Beast of Gévaudan (La Bête du Gévaudan) which was a real wolf-like creature that prowled the Auvergne and South Dordogne regions of France during the years 1764 to 1767, killing about 100 people, often in bizarre circumstances.
All the primary characters, except the Native American Mani, actually existed and lived during reign of King Louis XV.
Universal Pictures paid $2 million for the rights to distribute this movie in the United States, and this movie went on grossing $11.2 million in limited theatrical release in the United States, making it the sixth-highest-grossing French-language movie of all time in the United States (this movie also did brisk video and DVD sales in the United States). Christophe Gans told GQ Magazine that the United States was a great success.