Independent
Happy
Courageous
Intelligent
Friendly
Loyal
Gentle
Going
Social
Sweet
Cheerful
Quiet

Protective
Alert
Powerful
Courageous
Intelligent
Docile
Affectionate
Reliable
Loyal
Devoted
Cheerful
Calm

Saint Bernewfies shed a lot of hair each year, so frequent brushing is essential for reducing shedding and maintaining coat health.

Doubull-Mastiffs are moderate shedders, but regular brushing can reduce shedding and maintain coat health.

Saint Bernewfies make excellent watchdogs - they're vocal and protective of their territory.

Doubull-Mastiffs are decent watchdogs - they'll alert their owner if something seems amiss.

United States

United States

Newfoundland, Saint Bernard

Bullmastiff, Mastiff

DRA = Dog Registry of America, Inc.

ACHC = American Canine Hybrid Club
DDKC = Designer Dogs Kennel Club
DRA = Dog Registry of America, Inc.

Brown

Brown

Black

Black

Black
Brown
Red
White

Fawn
Brindle

Saint Bernewfies have medium-length coats.

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

A Saint Bernewfie can have a litter of 4-12 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 Doubull-Mastiff can have a litter of 4-13 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.

Distichiasis
Gastric Torsion
Elbow Dysplasia
Pulmonic Stenosis
Hip Dysplasia
Heart
Subvalvular Aortic Stenosis

Entropion
Elbow Dysplasia
Retinal Dysplasia
Hip Dysplasia
Bloat
Ataxia

Entropion
Cataracts
Pyotraumatic Dermatitis
Osteochondritis Dissecans

Ectropion
Progressive Retinal Atrophy
Cataracts
Retinal Dysplasia

Cardiac
Eye
Physical Examination
Hip and Elbow X-rays

X-Rays
MRI
CT Scan
Eye Examination
Myelography (Dye And X-Ray to Assess The Spinal Cord)

Saint Bernewfies are suitable for those with a balanced lifestyle as they have an average energy level.

Doubull-Mastiffs are a good choice for a low-key lifestyle due to their low energy levels.

Saint Bernewfie has very high social needs and requires regular mental and physical stimulation, a job or purpose, and companionship.

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

Saint Bernewfies bark moderately when necessary and may also bark due to certain triggers like fear, alarm, boredom, greeting, separation anxiety and compulsive barking.

Doubull-Mastiffs are typically quiet and only bark when needed, such as to alert their owner or when in distress.

Daily training, Tug of war, Play time, Petting him, Cuddling, Walks, Swimming, Belly rubs, Running, Swim, Walk, Nap, Walking, Relaxing, Play, Cuddles, Sleep, Tug-of-war, Run

Teaching tricks, Fetch, Dog Parks, Hike, Swim, Walk, Tug-of-war, Tug of war, Walks, Swimming, Cuddling

Saint Bernewfies 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.

Doubull-Mastiffs are low-energy dogs. This breed make a great companion for a relatively inactive person. Doubull-Mastiff dogs require a few short daily walks, and then they're happy snuggling next to you for the rest of the day.

There's really no limit to how far you walk your dog as long as they're comfortable. For Saint Bernewfie, it's at least 8 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 Doubull-Mastiff, it's at least 7 miles / week. Just remember to build distance and stamina gradually over time.

In general most Saint Bernewfies usually need at least 45 minutes of exercise daily. This can be spread across the day and include all sorts of high-energy activities, like walking, running and playing.

In general most Doubull-Mastiffs usually need at least 30 minutes of exercise daily. This can be spread across the day and include all sorts of high-energy activities, like walking, running and playing.

Saint Bernewfies require significant grooming, including regular trims and professional grooming assistance to maintain their coat. They may also require frequent bathing to keep their coat and skin healthy.

The Doubull-Mastiff has low grooming needs and is easy to maintain.

Pin Brush
Slicker Brush
Dematter
Nail Clipper

Slicker Brush
Comb
Nail Clipper

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

Doubull-Mastiff is an independent and stubborn breed with low obedience intelligence, making training a test of patience.

This breed is sensitive to its environment and best suited for patient and understanding families with a consistent routine.

This breed is sensitive and requires gentle handling and a calm home environment.

Saint Bernewfies are very friendly with cats and make great companions for them.

Doubull-Mastiffs are average in their friendliness toward cats and tend to do well with them, especially if raised together.

Saint Bernewfies are generally very friendly towards other dogs, with a happy and affectionate temperament.

Doubull-Mastiffs are less friendly towards other dogs, but can improve with socialization.

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

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

Saint Bernewfies have an average level of playfulness, enjoying playtime like most dogs but not excessively so.

Doubull-Mastiffs are not known for being a highly playful breed.