The merle French Bulldog is a coat pattern that is growing in popularity amongst Frenchie owners. This coat pattern is considered an exotic coat color, meaning it is non-standard according to the American Kennel Club. Merle is a dominant coat pattern. The pattern appears when the dog carries one copy of the M-locus. The coat will be spotted or speckled and consist of 2 or more colors. This gene also produces pigment variation in the eyes. Therefore, it is usually an indication that the French Bulldog carries the gene, even if the coat doesn’t appear merle. Every color can be present in the merle French Bulldog, including the pied variety.