Merle French bulldog

A Merle French Bulldog is a Frenchie with a unique, patchy coat pattern, created by introducing the merle gene through cross-breeding with other dogs (like Chihuahuas) in the early 2000s, making them non-purebred by traditional standards, though often accepted by some registries after many generations of back-breeding; they’re highly sought after for their look but carry risks of severe health issues, especially deafness and blindness, when two merle parents are bred together, leading to controversy among breeders and dog lovers.