is a breed of domestic dog. is a breed of domestic dog. They are the result of a cross between Toy Bulldogs imported from England and local ratters in Paris, France, in the 1800s. The small Bulldog type gradually became thought of as a breed, and received a name, the Bouledogue Francais. This Francization of the English name is also a contraction of the words boule (ball) and dogue (mastiff or molosser). This Francization of the English name is also a contraction of the words boule (ball) and dogue (mastiff or molosser). The French bulldog has only a single short coat. which combined with their compromised breathing system, makes it impossible for them to regulate their temperature efficiently. This means the dog may easily become cold, and are prone to heat stroke in hot and humid weather.