Neo Bullmastiff

110-130 lbs
Neopolitan Mastiff
Italian Mastiff

The hybrid of the Bullmastiff and the Neapolitan Mastiff is officially known as the Italian Bullmastiff by the Designer Canine Registry, but as the Neo Bullmastiff by the American Canine Hybrid Club. This is a giant breed dog, generally over two feet tall at the shoulder and well over one hundred pounds. This dog is quite large and early socialization and training are recommended to bring out this giant’s easy-going nature. The easy-going nature of this dog does not always extend to other canines, particularly those dogs that appear aggressive or that encroach on their territory and they may also inherit a strong inclination to chase smaller animals from the Bullmastiff. They do have fairly undemanding grooming and exercise requirements, but they are extremely social with their family and do require a great deal of attention to be happy and stable. 

Guard Dog, Companion
Date of Origin
Bullmastiff and Neapolitan Mastiff

Neo Bullmastiff Health

Average Size
Male Neo Bullmastiff size stats
Height: 27-31 inches Weight: 130-150 lbs
Female Neo Bullmastiff size stats
Height: 25-29 inches Weight: 110-130 lbs
Major Concerns
  • Elbow Dysplasia
  • Canine Hip Dysplasia
  • Gastric Dilation Volvulus (GDV) or Bloat
Minor Concerns
  • Entropion
  • Ectropion
  • Cherry Eye
  • Retinal Dysplasia
  • Lip Fold Pyoderma
  • Skin Fold Dermatitis
  • Wobbler's Syndrome
  • Ataxia
Occasional Diagnoses
  • Demodicosis
  • Hypothyroidism
  • Osteosarcoma
  • Tumors
Occasional Tests
  • Eye Examination
  • Thyroid Testing
  • Skin Scrapings and Biopsy
  • X-rays or other radiographic imaging
  • Bone Biopsy
  • Myelography (Dye And X-Ray to Assess The Spinal Cord)

Neo Bullmastiff Breed History

The Neo Bullmastiff is a giant dog of the molosser type, a category of canines that are characterized by massive heads, thicker bone structure, and short powerful necks. It is not a purebred dog, but rather an intentional cross between the Bullmastiff and the Neapolitan Mastiff, two giant breed molossers from different regions and with slightly differing purposes. The Neapolitan Mastiff hails from Italy, where it is referred to as a Mastino Napolitano, and was originally employed as the guardian of livestock and of the family and were known for bonding strongly to their families but being more distrustful and guarded around others. It wasn’t until World War II ended that Neapolitan Mastiff fanciers began to concentrate on the breed and in 1948 the breed standard was written up. The Bullmastiff is an English molosser type dog that was also used as a guardian, but more often for guarding the vast tracts of land that were found on large English estates, as well as the wildlife they contained. The Bullmastiff was a designer dog long before the term was coined in the late 20th century, an intentional mix between the English Mastiff and the English Bulldog. English Mastiffs were employed in these positions, prior to the development of the Bullmastiff in the late 1800s, but they proved to be too slow moving to be fully effective on larger estates, and when the Bulldog of the 1800s was given this task, they were a little too aggressive and tenacious for the job. The combination of the two resulted in the Bullmastiff, a giant dog with the energy and athleticism to chase thieves and poachers, but with enough restraint not to maul them. 

Neo Bullmastiff Breed Appearance

The Neo Bullmastiff is the hybrid of two giant sized dog breeds and is a giant in its own right. Although this dog is typically a bit smaller than the purebred Neapolitan Mastiff, it still averages well over a hundred pounds when they are fully matured. Like other molosser breeds, this hybrid is a solidly built animal with a substantial bone structure and a short, extremely powerful neck. Their heads are massive with muzzles that are shorter than average, approximately one-third the length of the skull itself, but very broad and deep. They also have small to medium eyes that are often partially or completely obscured by facial wrinkles and V-shaped ears that are set well above the cheekbones and carried close to the cheeks. This hybrid is likely to have loose skin that can range from a great deal of wrinkling and drooping skin all over their bodies like the Neapolitan Mastiff to wrinkles that are confined mainly to their necks and facial areas like the Bullmastiff.  Neo Bullmastiff dogs will typically sport a short, single-layer coat that comes in several solid colors and may also display brindle markings or a black mask. 

Eye Color Possibilities
brown Neo Bullmastiff eyes
amber Neo Bullmastiff eyes
Nose Color Possibilities
blue Neo Bullmastiff nose
black Neo Bullmastiff nose
brown Neo Bullmastiff nose
isabella Neo Bullmastiff nose
Coat Color Possibilities
black Neo Bullmastiff coat
blue Neo Bullmastiff coat
brown Neo Bullmastiff coat
brindle Neo Bullmastiff coat
red Neo Bullmastiff coat
fawn Neo Bullmastiff coat
sable Neo Bullmastiff coat
Coat Length
Short Medium Long
Coat Density
Sparse Normal Dense
Coat Texture
Neo Bullmastiff straight coat texture
Straight Wiry Wavy Curly Corded

Neo Bullmastiff Breed Maintenance

The grooming routine for the Neo Bullmastiff should be a fairly uncomplicated affair; they require infrequent baths, although many owners of Mastiff type dogs use dry shampoos between baths to deodorize their dogs. Weekly brushing is sufficient to keep the coat free of dirt and flyaway hair, but it is important to attend to any wrinkles on a daily basis, ensuring that they are cleaned with a damp cloth and thoroughly dried, particularly the wrinkles around the face. This prevents any dirt, food debris, or sweat from irritating the skin as these conditions can cause rashes, acne, and even serious infections to develop if left untreated. Short muzzled dogs also have a higher incidence of dental trouble than dogs with longer snouts, so regular dental care and hygiene are particularly important with this hybrid.  

Brushes for Neo Bullmastiff
Slicker Brush
Nail Clipper
Brushing Frequency
Neo Bullmastiff requires weekly brushing
Daily Weekly Monthly

Neo Bullmastiff Temperament

This is a dog that is built for defense, both in physical conformation and in temperament. They tend to be mild-mannered but discriminating in regards to strangers, but loving and loyal towards their family and their charges. As calm and relaxed as these massive animals appear to be, when triggered to act they can be an intimidating and formidable adversary. They can be a bit stubborn and strong-willed and training is most effective when consistent and started early. Although this crossbreed is fairly tolerant with children, any interactions should be closely supervised, particularly with younger or more rambunctious children. Children should be prevented from climbing on this animal or playing too roughly no matter what the age of the canine as this kind of treatment is likely to lead to damage to the joints of these dogs. The young Neo Bullmastiff may be too enthusiastic to play with small children as they can easily knock a toddler or small child to the floor even as six-month-old puppies, but as they mature they become more quiet and sedate. In order for this dog to be a stable and balanced individual, a great deal of positive socialization should take place as soon as possible. Although they are fairly good with most humans, they may have a little more difficulty getting along with other animals as they have both a high prey drive and are typically rather territorial. 

Neo Bullmastiff Activity Requirements

Neither the Bullmastiff nor the Neapolitan Mastiff typically require as much activity as most large dogs and are usually quite satisfied with just 45 minutes or so of activity per day. It is crucial to keep exercise sessions shorter in duration and not excessively intense for giant dogs, particularly during their formative years, in order to protect their bones and joints. This can be done by breaking exercise sessions up throughout the day and by ensuring that your dog does not engage in excessive rough-housing or jumping from any significant heights. This crossbreed is much more comfortable when given the room that a house provides, and tends to be too much dog for a smaller space like an apartment building

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

Neo Bullmastiff Food Consumption

Cups Per Day
3.5 cups
Daily Cost
$2.70 - $3.00
Monthly Cost
$80.00 - $90.00

Neo Bullmastiff Height & Weight

6 Months
Male Neo Bullmastiff size stats at six months
Height: 23.5 inches Weight: 84.0 lbs
Female Neo Bullmastiff size stats at six months
Height: 21.5 inches Weight: 72.0 lbs
12 Months
Male Neo Bullmastiff size stats at 12 months
Height: 26.0 inches Weight: 119.0 lbs
Female Neo Bullmastiff size stats at 12 months
Height: 24.0 inches Weight: 101.5 lbs
18 Months
Male Neo Bullmastiff size stats at 18 months
Height: 28.0 inches Weight: 126.0 lbs
Female Neo Bullmastiff size stats at 18 months
Height: 26.0 inches Weight: 108.0 lbs

Neo Bullmastiff Owner Experiences

10 Weeks
3 People
House & Yard
Well its a new relationship but its blossomed tremendously quick ive had dogs my whole life but shes amazingly unique and both her my 1 year old 10 year old and myself have had a connection the minute she came in to our lives very cheeky LOVES to chew a part of teething as most pups do haha Very very fast learning baby thats for sure mastered come sit wait all in two weeks but very stubborn especially when they are on a mission she will randomly push our kitchen bin out and pull random things out to rip up while were asleep yes im sure you've guessed inside pup indeed we've put a barrier gate to stop her but with out doubt every morning theres a very odd trail of mess we can basically follow to her bed we've double checked none is consumed and given the ok but well in my eyes pups are babies too and they have to be taught but other then that shes doing amazing has doubled in size over the past nearly 4 weeks which is crazy when trying to put on her harnesses but at times funny as she prefers the tiny blue one rather the fitted red all else I can say is number one best mate/ fur baby :)
3 years, 8 months ago
Book me a walkiee?
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