Protective
Alert
Courageous
Intelligent
Affectionate
Loyal
Cheerful
Faithful

Loving
Stubborn
Independent
Energetic
Alert
Courageous
Friendly
Social
Sweet
Aggressive
Cheerful

Mountain Mastiffs make excellent watchdogs - they're vocal and protective of their territory.

Bull Jacks aren't great guard dogs; they tend to just watch without taking action.

Mastiff, Bernese Mountain Dog

Bulldog, Jack Russell Terrier

ACHC = American Canine Hybrid Club
DBR = Designer Breed Registry
DDKC = Designer Dogs Kennel Club
DRA = Dog Registry of America, Inc.
IDCR = International Designer Canine Registry®

ACHC = American Canine Hybrid Club
DRA = Dog Registry of America, Inc.

Brown

Brown

Black

Black

Black
Fawn
Silver
White
Brown

Brown
White
Black

Mountain Mastiffs have coats that can be either short or medium in length.

Bull Jacks have medium-length coats.

Straight

Wiry

A Mountain Mastiff can have a litter of 1-14 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

A Bull Jack can have a litter of 4-8 puppies on average. However, it's worth noting that the size of the litters can vary greatly. Factors that can influence litter size include the health of the mother, breeding history, and genetics.

Mountain Mastiffs are known for their adaptability and can adjust well to different environments and lifestyle changes.

Bull Jacks are highly adaptable and versatile, making them excellent companions for families and individuals of all lifestyles.

The Mountain Mastiff breed is generally very healthy, requiring minimal vet visits. Still, it's important to keep an eye on their health and seek veterinary care when needed.

Bull Jacks typically have low vet costs due to their good health, but it's important to monitor their health and seek vet care when necessary.

Bloat
Kidney Problems
Von Willebrand's Disease
Seizures

Patellar Luxation
Glaucoma
Hip Dysplasia
Hemolytic Anemia

Hip And Elbow Dysplasia
Eye Problems

Cherry Eye
Epilepsy
Heart Murmur
Atopy
Mass Cell Tumor

Elbow
Blood
Eyes
Hips
Up:Uc Ratio For Kidney Function

X-Rays
Eye Examination
Electrocardiogram
Complete Blood Count
Skin Biopsy
Allergy Testing

Mountain Mastiff has average social needs and is less independent than other breeds.

Bull Jack has above average social needs and thrives with interaction with humans and other dogs.

Mountain Mastiff dogs are generally less vocal than other breeds and only bark when necessary, such as to alert their owner or communicate.

Bull Jacks are typically quiet and only bark when needed, such as to alert their owner or when in distress.

Mountain Mastiffs are medium-energy dogs and typically enjoy socializing and playing casual or even sustained games of chase with other dogs. They may also have occasional periods of barking or racing around the house.

Bull Jacks are high-energy dogs. They need mental as well as physical exercise. These dogs require a lot of your involvement and without it they can, and will, become problematic dogs.

There's really no limit to how far you walk your dog as long as they're comfortable. For Mountain Mastiff, it's at least 10 miles / week. Just remember to build distance and stamina gradually over time.

There's really no limit to how far you walk your dog as long as they're comfortable. For Bull Jack, it's at least 12 miles / week. Just remember to build distance and stamina gradually over time.

Ideally, Mountain Mastiff should be brushed at least 2 or 3 times a week (preferably daily) improve shedding.

Bull Jack should be brushed at least once a week. Of course you can give them more frequent brushes if you find that they are still shedding a lot

Pin Brush
Comb
Scissors
Nail Clipper

Slicker Brush
Comb
Nail Clipper

For an average 150-200 pound (68 - 91 kg) Mountain Mastiff feed 5 cups daily. But, keep in mind, the amount you feed is going to be dependent on the quality of the food you are feeding.

For an average 17-55 pound (8 - 25 kg) Bull Jack feed 3 cups daily. But, keep in mind, the amount you feed is going to be dependent on the quality of the food you are feeding.

The average cost of a Mountain Mastiff is somewhere $4.90 - $6.30 per day.

The average cost of a Bull Jack is somewhere $1.70 - $2.00 per day.

The average per month expenses of a Mountain Mastiff is between $147 - $161. This makes an average of $1764 - $1932 per year. It will be on the higher side when the dog is still small because it will need more frequent visits to the vet, shots.

The average per month expenses of a Bull Jack is between $49 - $63. This makes an average of $588 - $756 per year. It will be on the higher side when the dog is still small because it will need more frequent visits to the vet, shots.

Mountain Mastiffs are average in obedience intelligence but have a high IQ and may cause trouble if left unsupervised.

Bull Jack has below average obedience intelligence, but they excel in understanding human emotions.

Mountain Mastiffs make excellent family pets for kids due to their gentle, protective nature and calm temperament.

Bull Jacks are good with kids if socialized and trained from a young age.

Mountain Mastiffs are average in their friendliness towards other dogs, and socialization can help.

Bull Jacks are generally very friendly towards other dogs, with a happy and affectionate temperament.

Mountain Mastiffs are averagely friendly around strangers but benefit from early socialisation.

Bull Jacks are friendly but may bark at strangers, and training is easy due to their intelligence.

Mountain Mastiffs are popular for their ease of training and quick learning ability.

Bull Jacks are usually easy to train but require consistency to fully obey commands.