Muscle Mastiff

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144-190 lbs
Dogue de Bordeaux

The Muscle Mastiff is a hybrid of the Mastiff and the Dogue de Bordeaux. The hybrid is a giant breed with an average weight of between 144 and 190 pounds once fully grown. Dogs of the hybrid have broad, strong bodies and large heads. Jowls of the Muscle Mastiff usually droop and his ears will be floppy. The hybrid is seen in black, black and tan, brown, red and silver. While large in size, the Muscle Mastiff will be a gentle dog who will be loyal and loving towards his humans. Moderate grooming is required and shedding will be minimal.

Date of Origin
Dogue de Bordeaux and Mastiff

Muscle Mastiff Health

Average Size
Male Muscle Mastiff size stats
Height: 27-33 inches Weight: 144-190 lbs
Female Muscle Mastiff size stats
Height: 27-33 inches Weight: 144-190 lbs
Major Concerns
  • Gastric Torsion
  • Hip Dysplasia
  • Heart Disease
  • Cancer
  • Brachycephalic Syndrome
Minor Concerns
  • Entropion
  • Ectropion
  • Elbow Dysplasia
  • Progressive Retinal Atrophy
  • Retinal Dysplasia
  • Bloat
  • Ichthyosis
  • Eye conditions
Occasional Diagnoses
  • None Known
Occasional Tests
  • Eye
  • Hip
  • Elbow
  • Heart
  • Thyroid Tests
  • Skin Scraping
  • Respiratory Tests
  • Blood Analysis

Muscle Mastiff Breed History

The Dogue de Bordeaux is a giant breed of the group molosser, which is known for the dogs’ strong and solid bodies. The molosser group includes Mastiff breeds, Saint Bernards and Pugs and it is thought that all of these dogs have descended from the Molossus. The Molossus is an ancient breed that can still be seen in mountainous areas of Albania. From the Molossus, the ancestry of the Dogue de Bordeaux becomes murky. Some believe that the dogs descended from a Spanish dog that was known as the Alano, which is now extinct. Others believe the Dogue de Bordeaux is a descendent of the Tibetan Mastiff while others feel that the dogs were previously known as the Dogues de Bordeaux of Aquitaine, an ancient French breed. Sources are not clear as to whether the Dogue de Bordeaux contributed to the lines of the Bulldog and Bullmastiff or if it is actually the other way around, with the Bulldog and Bullmastiff contributing to the Dogue de Bordeaux. In the 1800’s dogs of the breed worked in France where they were trained to bait bulls and jaguars, herd cattle and provide security for property. The breed did not become known in the United States until 1982 as a result of an article in “Dog World” and only gained recognition by the American Kennel Club in 2008. The Mastiff is another giant breed descended from the Molosser family. It is thought that the dogs were brought to the British Isles on Phoenician trading vessels between 2000 and 1500 BC. The modern-day Mastiff is a descendent of these dogs who were isolated on an island and bred to protect those who lived there. In 55 BC during the Roman invasion, the Mastiff was working as war dogs to resist the Romans. Julius Caesar was impressed with the size and courage of the Mastiff and brought a pack of the dogs to Rome to battle lions and gladiators. Over 100’s of years, the Mastiff continued to provide protection and was also used by humans for bull and bear baiting, along with pit fighting. Selective breed occurred in more recent years to reduce some of the more aggressive qualities of the Mastiff. The breed developed into a large, docile dog and became recognized by the American Kennel Club in 1885.

Muscle Mastiff Breed Appearance

The Muscle Mastiff is a large dog with an average weight of 144 to 190 pounds. The hybrid is seen in a variety of colors to include black, black and tan, brown, red and silver and his coat will be short, fine and soft. The appearance of the Muscle Mastiff will be the result of the traits the dog inherits from each parent. A large, powerful body will be inherited from both the Mastiff and the Dogue de Bordeaux. Traits inherited from the Mastiff include a large head, short muzzle and dark eyes that are set widely apart. Loose skin around the face and neck that form wrinkles and large jowls may be inherited from the Dogue de Bordeaux.

Eye Color Possibilities
hazel Muscle Mastiff eyes
brown Muscle Mastiff eyes
Nose Color Possibilities
black Muscle Mastiff nose
isabella Muscle Mastiff nose
Coat Color Possibilities
black Muscle Mastiff coat
brown Muscle Mastiff coat
red Muscle Mastiff coat
silver Muscle Mastiff coat
Coat Length
Short Medium Long
Coat Density
Sparse Normal Dense
Coat Texture
Muscle Mastiff straight coat texture
Straight Wiry Wavy Curly Corded

Muscle Mastiff Breed Maintenance

The Muscle Mastiff will require a moderate amount of grooming; brushing several times per week will help to remove loose and dead hair and keep his coat looking healthy. How frequently your Muscle Mastiff should be bathed will be dependent on the coat he inherits. Monthly bathing is typically sufficient for the Dogue de Bordeaux, while the Mastiff may need to be bathed more often. Should your Muscle Mastiff have skin folds, you will want to check them regularly to be sure that there is no moisture trapped in them as that can cause his skin to become irritated and lead to a poor scent. It is also recommended that you wipe down his face and muzzle weekly to ensure that no infection develop as he may drool heavily. The hybrid is found to do better in cold temperatures than those that are very warm. For the most part, the hybrid is easy to train though will not respond to harsh methods.

Brushes for Muscle Mastiff
Pin Brush
Slicker Brush
Nail Clipper
Brushing Frequency
Muscle Mastiff requires weekly brushing
Daily Weekly Monthly

Muscle Mastiff Temperament

The Muscle Mastiff can be described as a giant teddy bear as a result of their gentle nature and mild temperament. The hybrid will be loving and devoted towards his humans and seek to be protective of them. Your Muscle Mastiff will likely do well with children, expressing patience with them and also get along with other animals in your home. While the hybrid may appear large and intimidating, the Muscle Mastiff is usually calm and gentle able to remain vigilant but not aggressive. On occasion, the Muscle Mastiff can be stubborn and attempt to be in charge (whether of his human or of another animal in the home); this can be helped through early socialization and training. Because of a desire for the hybrid to protect his humans and his ability to be vigilant, the Muscle Mastiff makes an excellent watch dog.

Muscle Mastiff Activity Requirements

To maintain his physical and emotional health, the Muscle Mastiff will require regular exercise. The activity level of the hybrid is no more than average and it is important that you don’t over-exercise your Muscle Mastiff. One or two short walks per day along with some indoor or outdoor play time should be sufficient. When weather is particularly warm, you will want to be sure to minimize your dog’s outdoor activity to be sure that he does not overheat. While he will be large in size, because he does not require a large amount of activity, your Muscle Mastiff can do well living in an apartment. 

Activity Level
Low Medium High
Rec. Walk Mileage Per Week
10 miles
Minutes of Activity Per Day
60 minutes

Muscle Mastiff Food Consumption

Cups Per Day
6 cups
Daily Cost
$4 - $5
Monthly Cost
$120 - $150

Muscle Mastiff Height & Weight

6 Months
Male Muscle Mastiff size stats at six months
Height: 14 inches Weight: 83 lbs
Female Muscle Mastiff size stats at six months
Height: 14 inches Weight: 83 lbs
12 Months
Male Muscle Mastiff size stats at 12 months
Height: 28 inches Weight: 155 lbs
Female Muscle Mastiff size stats at 12 months
Height: 28 inches Weight: 155 lbs
18 Months
Male Muscle Mastiff size stats at 18 months
Height: 30 inches Weight: 167 lbs
Female Muscle Mastiff size stats at 18 months
Height: 30 inches Weight: 167 lbs

Muscle Mastiff Owner Experiences

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