As with many aspects of French Bulldog history, the exact origins of fluffy French Bulldogs are not well-documented. However, it is believed that the gene responsible for the fluffy coat, known as the LH gene, has been present in French Bulldogs since they first became a breed. While the LH gene may have existed for centuries, fluffy Frenchies were likely much rarer than their smooth-coated counterparts due to the long coat being less desirable during their Bulldog ancestor’s time as a bull-baiting breed.