French bulldogs are bred in Germany so large because of their popularity as working dogs. The French bulldog was originally bred in France to protect cattle and other livestock from wolves. Today, the French bulldog is still used as a working dog in many countries but is most popular in Germany where it is used as a police dog and mascot. In order to produce the largest and strongest French bulldogs possible, German breeders select dogs from larger bloodlines. This results in a greater chance of producing a healthy and strong dog that can handle tough tasks.