Pyrenean Mastiff vs American Molossus - Breed Comparison

Pyrenean Mastiff is originated from Spain but American Molossus is originated from United States. Pyrenean Mastiff may grow 16 cm / 7 inches higher than American Molossus. Pyrenean Mastiff may weigh 52 kg / 115 pounds more than American Molossus. Both Pyrenean Mastiff and American Molossus has same life span. Pyrenean Mastiff may have more litter size than American Molossus. Pyrenean Mastiff requires Low maintenance. But American Molossus requires Moderate maintenance

Basic Information

Group:
Working dog
Molosser dogs
Origin:
Spain
United States
Height Male:
75 - 82 cm
29 - 33 inches
56 - 66 cm
22 - 26 inches
Height Female:
75 - 82 cm
29 - 33 inches
51 - 60 cm
20 - 24 inches
Weight Male:
70 - 100 kg
154 - 221 pounds
38 - 48 kg
83 - 106 pounds
Weight Female:
70 - 100 kg
154 - 221 pounds
32 - 43 kg
70 - 95 pounds
Life Span:
10 - 14 Years
10 - 14 Years
Litter Size:
6 - 12
6 - 8
Size:
Giant dog
Giant dog
Other Names:
None
American Molosser • American Brabanter • American Bullenbeisser
Colors Available:
tan, White with large markings of reddish brown, grey or black.
Colors are black, black brindle with some white
Coat:
Longish, thick double coat
coat type coarse, dense, smooth and long
Shedding:
Moderate, Constant
Minimal
Temperament:
Affectionate, Alert, Cheerful, Courageous, Curious, Docile, Energetic, Friendly, Gentle, Independent, Intelligent, Lively, Loving, Loyal, Outgoing, Playful, Protective, Quiet, Responsive, Social, Stubborn, Territorial
Alert, Courageous, Independent, Intelligent, Loving, Loyal, Protective, Quiet, Territorial
Grooming:
Low maintenance
Moderate maintenance
Trainability:
Easy
Moderate
Hypoallergenic:
No
No
Kids Friendly:
Yes
Yes
New Owners Friendly:
Yes
No

History

pyrenean mastiffThe Pyrenean Mastiff originates from Spain, descending from ancient livestock guardian-type dogs.

They have always been used as guardians, looking out for livestock and warding off predators.

When you do research you find that there is little information on the exact origins of the dog. It was only in recent years that the dog was taken out of its native region and sent to the USA, but it isn’t recognized by the AKC.

The dog was however recognized by the FCI in 1982.

Based on the massive dog of Mesopotamia in 5000 BC, the American Molossus is the same dog recreated in the United States by and for the lovers of these giant dogs. The ancient Molossus was fierce to look at, massive in size, courageous and loyal. He was undaunted by any animal and stood up to any man attempting to hurt his master. When Rome fell the descendants of today’s Molossus were scattered and attempts to revive the breed have created carious large dogs. The American Molossus is the first true recreation that hits the mark.

The original Molossus was one of the most primitive of dogs, one of the earliest dogs that men domesticated. Their initials duties were the guarding of herds and homes against all enemies. They were incredibly loyal to their one master and stayed with him and protected him. These dogs also ate carrion and served the villages by eliminating animal carcasses. They could handle any other hunting animals such as wolves and large cats. This dog, although extinct was the ancestor of all the Mastiff-type dogs of today. The Molossus is said to be the ancestor of the St. Bernard, English Mastiff, Greater Swiss Mountain Dog, Bernese Mountain Dog, Newfoundland, Great Dane, Great Pyrenees, Rottweiler, Rottweiler and the Neapolitan Mastiff. Now these breeds have become the ancestry of the American Molossus.

According to Marcus Curtis, the founder of the new Molossus, the nearest relative of the American Molossus is the Neapolitan Mastiff. The Hines Bulldog, German Rottweiler, American Bandogge, and South African Boerboel together with the Neapolitan Mastiff were used to form the American Molossus. The goal of the founder was to make a great family pet and protector. It was specifically bred to be courageous, loyal and protective.

Description

pyrenean mastiff puppyThis is a beautiful big dog, strong and muscular. He stands at between 75 and 82cm in height and weighs between 70 and 100kg, males and females.

He has a thick double coat which is fairly long and which also sheds regularly. The coat is essentially white in color with large markings of reddish brown, tan, grey or black.

The Pyrenean Mastiff has a large head with a black nose, small, dark eyes, floppy, medium sized ears and a long tail with lush hair growth.

Temperament:

Large he may be, but the Pyrenean Mastiff is a docile dog that gets on well with children as well as with other pets. He is intelligent but also strong willed and independent, making him a little bit difficult to handle if he chooses to ignore your commands.

Training and socialization will be required if you want him to be obedient and well mannered. He can do well with you as a novice pet owner, so long as you are firm, consistent, kind, patient and fair in your handling of the Pyrenean Mastiff.

Even with socialization, he tends to be wary around strangers and becomes quite protective around his human family.

He is a calm dog that doesn’t require a whole lot of exercise, but he isn’t suited to life on a small property in the city as he needs a lot of space to feel content and at ease.

This is a giant, massive dog in every way and this recently developed standard makes that very clear. The Molossus should be heavy bones, muscular with a lot of loose skin and wrinkles of all kinds, everywhere. He is an intimidating presence, with a massive square head, broad shoulders, height and mass. No, the American Molossus is not athletic, but he certainly is intimidating.

His head is massive in comparison to his body and it must be square. He has extensive wrinkles and pendulous lips and dewlap. The face is all folds of skin and wrinkles. Deep set eyes, drooping upper lids and lower lids as well as an intimidating expression. His brow is well developed with a marked frontal furrow. The nose is large, and the muzzle is about a third of the length of its head. It is short and broad. Everything about the head must be square. It’s neck and body are powerful and muscular. The chest is deep, wide and barrel like. The back is also powerful and muscular. The front legs are heavy and muscular while the hind legs are broad, strong, powerful and wide-stance. Do not remove the front dew claws. His tail is thick and wide then gradually tapers at the tip.

Health Problems

pyrenean mastiff dogThis is a fairly healthy dog breed, particularly when you consider what a big dog he is. There are always some health concerns to watch for so that you can take steps to get your pet well again.

Dental Disease:

There is tartar build-up on the teeth and this can lead to infection of the gums and roots of the teeth. Rotting teeth can cause pain, but more worrisome they can cause damage to the heart and kidneys as well as the dog's joints. The vet or professional pet groomers can keep your pet’s teeth clean. They can advise you on how to take care of your large pet’s teeth.

Bacterial and Viral Infections:

Diseases such as rabies and parvo can be prevented by means of vaccine.

Obesity:

You can’t afford for a big dog like this to become obese. It’s a serious disease and can put pressure on your dog’s joints and also cause back pain and digestive disorders.

Parasites:

Your dog can be infected with all kinds of worms and bugs such as ticks d and fleas as well as mites. Some of these parasites can be transmitted to you. Your vet can talk about preventive medication.

Bloat:

Gastric Dilatation and Volvulus, commonly referred to as bloat often occurs in dogs with deep chests.

The stomach twists and fills with gas,and blood to the stomach is cut off. Left unattended to, your dog can die, sometimes within half an hour. His stomach is hard and swollen, requiring immediate veterinary attention.

Like all Mastiffs the American Molossus faces a variety of potential illnesses, some brought on by its size, some not.

Spondylosis

This could easily be a function of its massive size. It is a degenerative disease and can cause the dog to become lame. In many cases the vertebrae can fuse, or severe pain can result. This is mostly seen in older members of the breed.

Cystinuria

Male Molossus can contract this inherited metabolic disease primarily. It can be life threatening and very serious as it affects the kidney and the bladder.

Wobblers Syndrome

This is essentially Cervical Vertebral Instability (CVI) and is caused by the pressure of the nerves in the neck and cervical spinal cord. This compression can cause deformity, pain and abnormal stance/gait. IT has been attributed to the nutrition needs and rapid growth of the Mastiff breeds.

Like all giant Mastiff breeds the Molossus can have skin issues from the wrinkles, dysplasia in the joints which we will address below.

Caring The Pet

Spay or Neuter:

pyrenean mastiff puppiesHave your pet spayed or neutered if you don’t want puppies. Spaying or neutering also decreases the likelihood of certain types of cancers.

Diet:

Nothing but a top quality diet is good enough for your pet. Commercially manufactured dog foods are a convenient means to feed your pet, and there are some excellent brands.

Look out for the ones for extra large dogs and avoid the ones with low quality ingredients. The dry kibble you give your big pet can be made more tasty when you add some homemade food to it about twice a week.

Dogs thrive on simplicity, so boiled chicken, sweet potatoes, brown rice or pasta, carrots and spinach will be wonderful for him when you chop the food up and add it into the dry kibble. Its such a tasty, wholesome treat for your pet.

Some raw meat added in occasionally will contribute to your pet’s heath. Make sure he is never without a constant supply of fresh, cool water.

Grooming:

Brush his coat at least twice a week. Check inside his ears for redness which could indicate an ear infection.

He’s an intelligent pet with lots of energy, so you will need to keep his mind and body active by ensuring he enjoys walks every day. He isn’t a dog that requires running with you on your jogs or cycles.

Feeding

Remembering that this is a very, very large dog you need to be careful about nutrition and how fast your puppy will grow. American Molossus puppies need four meals a day until 12 weeks old. Then until they are 6 months old feed then 3 times a day. Finally, from 6-month-old puppy to adult – feed them twice in 24 hours.

At one year either feed them once or two small meals.

Many people feed their Molossus eggs, vegetables, fruit, and cottage cheese as ten 5 of the total for the day but avoid other table foods. The Molossus can become very picky about what he eats if you feed him too many table scraps.

Health issues

In addition to the health problems listed above, the American Molossus is also susceptible to: Ditichiasis – Eyelashes that are in the margin of the eyelids and can cause eye irritation. May require surgery to correct.

Cataract

Could cause blindness if not removed. Ectropian/Entropion: Eversion and inversion of eyelids which cause ocular irritation.

PRA or Progressive Retinal Atrophy

This is a degenerative disease which causes the dog to go blind. It is a disease the affects the retinal visual cells, first causing night blindness then day blindness. A DNA test is available for detecting PRA in all Mastiff breeds.

Dysplasia of the Elbow or/and the Hip

Common in large breeds and especially in giant breeds like the Molossus. Multiple forms and causes but all can cause pain and lameness.

Skin issues

Do to wrinkles and loose skin – check often for moisture and infections.

Panosteitis or Wandering Lameness

The is a problem based on a variety of possible causes. It happens when the puppy is between 6-16 months of age. Lameness occurs over time in one limb or in all. It can be intermittent and might be caused by diet, genetics, stress, autoimmune or metabolic issues or infection.

HOD or Hypertrophic Osteodystrophy

This issue is developmental as the dog’s toes turn either inward or outward, then as the condition advances the dog suffers fever, pain in all joints, lethargy and the inability to stand. This happens when the dog consumes too many calories for his activity level in the development times.

Exercise and games

The American Molossus is not a couch potato. He needs to be walked at least twice a day and loves to play fetch. He will be greatly benefited by obedience training. Do not overdo it with exercise but make sure they don’t just lay around.

Characteristics

pyrenean mastiff dogsThese beautiful dogs have always been extraordinary guarding dogs, but he has some other excellent characteristics that make him such a great companion.

He is a loyal, loving dog and easy to train.

You just have to think twice before you take such a large dog into your home, as he doesn’t like to be cooped up in small spaces. He will also eat a lot too.

You want to know that you can provide the Pyrenean Mastiff with all these things. If you have the means to keep such a large pet, then he will make you a splendid canine companion.

The American Molossus is an intimidating massive giant bred for protection and guard duty. He is incredibly loyal to his family and courageous in his protection of them. They are guard dogs, not attack dogs. Their simple appearance is usually enough to frighten off anyone intending harm on their families. He is in reality a loving giant. He is intelligent and stable with a strong desire to please his owner. He is a calm yet vigilant presence in the home.

Because the Molossus is so large, it is recommended that the puppy be socialized and trained professionally. It takes a strong owner to handle this breed. They need to know the rules and have the rules consistently applied. The owner must be the pack leader.

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