Dog Breed Info Center(R) DBIC

Muscle Mastiff

Dogue de Bordeaux / Mastiff Mixed Breed Dogs

Information and Pictures

Side-view - A tan Muscle Mastiff puppy is wearing a black harness laying in grass with its leg spread out akimbo. Its ear is turned inside out.

16-week-old Dogue de Bordeaux x English Mastiff puppy laying down in the grass

Other Names

Bordeau Mastiff


The Muscle Mastiff is not a purebred dog. It is a cross between the Dogue de Bordeaux and the Mastiff. The best way to determine the temperament of a mixed breed is to look up all breeds in the cross and know you can get any combination of any of the characteristics found in either breed. Not all of these designer hybrid dogs being bred are 50% purebred to 50% purebred. It is very common for breeders to breed multi-generation crosses.


ACHC = American Canine Hybrid Club

DBR = Designer Breed Registry

DDKC = Designer Dogs Kennel Club

DRA = Dog Registry of America, Inc.

Recognized Names

American Canine Hybrid Club = Muscle Mastiff

Designer Dogs Kennel Club = Bordeau Mastiff

Designer Breed Registry = Bordeau Mastiff