Doubull-Mastiff

130-200 lbs
27-36"
United States
Bullmastiff
Mastiff

The Doubull-Mastiff is a designer dog composed of two pure breeds, the Bullmastiff and the Mastiff.  The Doubull-Mastiff will be a giant breed. His dense coat will be short and shedding will be low. Brushing can be done weekly to remove dead hair and to keep his coat shiny. He will be a low energy level dog and a loving, sweet, loyal companion - a gentle giant who makes a wonderful family pet. Owners of this hybrid say because of his sheer size, the Doubull-Mastiff is not suited for apartment living.

purpose Purpose
Companion
history Date of Origin
Unknown
ancestry Ancestry
Bullmastiff, Mastiff

Doubull-Mastiff Health

Average Size
Male Doubull-Mastiff size stats
Height: 27-36 inches Weight: 130-200 lbs
Female Doubull-Mastiff size stats
Height: 27-36 inches Weight: 130-200 lbs
Major Concerns
  • Entropion
  • Elbow Dysplasia
  • Retinal Dysplasia
  • Hip Dysplasia
  • Bloat
  • Ataxia
Minor Concerns
  • Ectropion
  • Progressive Retinal Atrophy
  • Cataracts
  • Retinal Dysplasia
Occasional Diagnoses
  • Obesity
Occasional Tests
  • X-Rays
  • MRI
  • CT Scan
  • Eye Examination
  • Myelography (Dye And X-Ray to Assess The Spinal Cord)

Doubull-Mastiff Breed History

Because the Dobull-Mastiff is a very modern breed, documentation on their history is limited.  However, we can go over his parent’s history. The Bullmastiff was first brought into the United States in the 1920s by oil tycoon John D. Rockefeller who wanted the large intimidating canine to guard his country estate. Developed in England around the 1860’s, the Bullmastiff is a cross between the Mastiff and the Bulldog. Gamekeepers bred these two formidable breeds to help them ward off poachers who wanted to gain access to the wild animals that were within the confines of estate. The Bullmastiff was known as the “Gamekeeper’s Night Dog” because he was agile, quick and strong despite his size and could run down and “detain” a poacher. It is believed that Mastiff-like dogs lived in Asia dating back to 2500 B.C.  These dogs were used for hunting lions, fighting in the arenas and in war time. In the Roman Colosseum, they were matched against bulls, tigers, bears and lions. Julius Caesar wrote about the Mastiff-type breed in his account of invading Britain in 55 B.C. The Mastiff of today was developed in England over two thousand years ago. Bred to be guard dogs, they protected livestock from wolves and other predators. During the 1800s the Mastiff was used in cruel sports such as dog fighting, bear baiting and bull baiting.  During World War I and World War II the breed almost became extinct; they were used as munitions carriers and were also hard to keep fed when food was scarce.

Doubull-Mastiff Breed Appearance

The Doubull-Mastiff will have the physical characteristic of both his parents.  He will be a giant breed and sport a very muscular body.  The Doubull-Mastiff is a tall dog with a coat is that is dense and short.  He is either fawn or brindle in color. The Doubull-Mastiff will have large square heads with V-shaped floppy ears and short muzzles. Their facial expression is noble and loving. The breed has deep large jowls and are known to drool, necessitating cleaning of the face every day. They have a dark “mask” around their eyes and nose. The Doubull-Mastiff may have a slight underbite and the skin around their face can be wrinkly and have folds.

Eye Color Possibilities
brown Doubull-Mastiff eyes
Brown
Nose Color Possibilities
black Doubull-Mastiff nose
Black
Coat Color Possibilities
fawn Doubull-Mastiff coat
Fawn
brindle Doubull-Mastiff coat
Brindle
Coat Length
coat
Short Medium Long
Coat Density
coat density
pin
Sparse Normal Dense
Coat Texture
coat texture
Doubull-Mastiff straight coat texture
Straight Wiry Wavy Curly Corded

Doubull-Mastiff Breed Maintenance

The Doubull-Mastiff has a short and dense coat that requires little maintenance. Weekly brushing can help remove loose fur. The folds and wrinkles on his face should be cleaned daily and kept as dry as possible so that moisture accumulation does not cause a proliferation of bacteria and yeast..  His ears should be cleaned weekly with an ear wash.  To prevent tartar and gingivitis, his teeth should be brushed with a canine toothpaste several times a week.   His nails may need to be trimmed monthly.  It is recommended that his nails be trimmed as a puppy, so that he gets used to the practice. Once used to the regimen, many dogs grow to love the attention.

Brushes for Doubull-Mastiff
Slicker Brush
Slicker Brush
Comb
Comb
Nail Clipper
Nail Clipper
Brushing Frequency
fur daily fur weekly fur monthly
Doubull-Mastiff requires weekly brushing
Daily Weekly Monthly

Doubull-Mastiff Temperament

The Doubull-Mastiff will have the behavior and personality traits of both his parents.  Protective of their family and good guard dogs, early obedience training and socialization with strangers and other dogs is recommended. They are usually not barkers but they are not quiet dogs.  They snort, grunt and snore. They also do a quite lot of drooling. The Doubull-Mastiff can be a little bullheaded, so patience and consistent training is a must. They can be little lazy but daily walks are required to keep him from becoming overweight. They are friendly and good with children but because of their size they should be supervised when interacting with them. Children should be taught to respect and to be gentle with animals.  They should not be allowed to ride the Doubull-Mastiff as this can cause physical harm to come to him. The Doubull-Mastiff is a gentle and loving giant who will need to be reminded that he is not a lapdog.

Doubull-Mastiff Activity Requirements

Your Doubull-Mastiff will enjoy his daily walks.  He will also like playing fetch and running in a fenced in yard. Play should be limited during high temperatures. His energy levels will be higher when he is a puppy but because he is growing very fast, it is important for him not to overdo activities despite his youth. Excessive exercise for a growing large breed puppy can cause damage their joints and bones. The Doubull-Mastiff may want to live the life of a couch potato but daily exercise is required to prevent obesity.

Activity Level
low activity medium activity high activity
Low Medium High
Rec. Walk Mileage Per Week
7 miles
walk mileage
Minutes of Activity Per Day
30 minutes
activity minutes

Doubull-Mastiff Food Consumption

Cups Per Day
4 cups
cup per day cost cup per day cost cup per day cost cup per day cost
Daily Cost
$2.75 - $3.00
food bowls daily cost
Monthly Cost
$80.00 - $90.00
food bag monthly cost

Doubull-Mastiff Owner Experiences

Jedidiah
12 Years
4 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Best dog eva. Easily trained. Very friendly.Guards the kids and other animals we have . Herds the chooks and ducks to bed at night. Very smart and intuitive.
1 year, 4 months ago
Murphy
2 Years
6 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Outdoor
Bath time
water
Park
playfight
training
sleep
Run
Walk
Play time
I am still not 100% sure what his breed is but from lots of research I think he is either a bull mastiff or an English mastiff but most likely A mix of the two! Which would be a Doubull Mastiff I think. Either way no matter what breed he is I always love him and I don’t know what I would do without him. 🥰😌💕 <3 Anyone able to help me find out what his breed is? I know he is a mastiff but I don’t know what type but all my research points to a cross between the English mastiff and the Bullmastiff.. anyone able to help? 🤷‍♀️🧠🐕
2 years, 4 months ago
Kitty
4 Months
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Teaching tricks
Fetch
Start out right away at 6 weeks with potty and basic command training. Very food motivated.
4 years, 10 months ago
Luna
3 Years
4 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Dog Parks
Hike
Swim
Walk
Amazing! The best breed we’ve ever had. She is so gentle, loyal and smart.
4 years, 2 months ago
Luna
5 Months
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Chasing the broom and walking in the woods
We love her, she sprinkles alot,when food time, petting,etc.
4 years, 3 months ago
Morris
24 Months
2 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Absolutely amazing dog. Love him like our kids. Would have ten if I could!
4 years, 1 month ago
Missi
4 Years
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walks and cuddles
The best breed ever I love them and waiting on a litter of her own
3 years, 9 months ago
zeus
6 Months
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Dog Parks
Tug-of-war
Grew so quickly. nice low energy and keeping with family.
3 years, 7 months ago
Rogue
2 Years
1 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Short trail walks on flat land
Tearing up rope teddy bears
Afternoon siestas
Cooling her down in heat with wet hand towels
Tug of war
Walks
swimming
Her mum was an English mastiff and dad was a bullmastiff. She is 46 kilos. She is a friendly dog but also very shy and timid at the same time with strangers. Must allow her to approach the person first then its ok to pat or she will walk off on them. Very avoidant with fighting but doesn't like dogs in her face will get annoyed and walk away and if continues will correct the dog but not hurt it. If another dog stares at her long in the eyes she will be protective and stand her guard, she has lunged at big dogs before but only to walk up to them to show her shes boss and stand with her cheek. She can be stubborn with complex tricks but always listen to me and stays very close. Easy to train to walk by your side. Loves her walks but don't over do it they don't drink a lot and tire very quickly. Limit over activity and jumping. I have a ramp for her to get out of the car as they are prone to both hip and elbow dysplasia. She sheds constantly so buy a shedding shampoo to limit this as its important. Always clean their eyes as prone to droopy eye and cherry eye and ectropion. Also very sensitive tummy so probiotics are great with seaweed kelp and green tripe (dry freezed) for healthy gut. Picky eaters like English mastiffs side but green tri
3 years, 3 months ago
Pinky
8 Weeks
2 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Having difficulty potty training and looking for resources.
2 years, 10 months ago
Grizz
4 Months
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Cuddling
He is very sweet and loving. Growing very quickly and enjoys multiple naps throughout the day. He is incredibly intelligent and has learned so much so quickly. He does have a stubborn side and patience is required in some situations :) I think if it were up to him he would sit in my lap all day and cuddle
2 years, 11 months ago
Animal Expert Question Icon
Question - Behavior
Question

9 month old Doubull Mastiff has been regressing. She is refusing to potty outside. It's like she has forgotten or is scared all of a sudden. What could be the issue? How can I make her go outside again?

Answer
Book me a walkiee?
Pweeeze!
Sketch of smiling australian shepherd