Maspyr

110-200 lbs
26-28"
United States
Mastiff
Great Pyrenees
The Maspyr is a large, even giant-sized dog that serves as a family protector and companion.  It is a designer mix between the purebred Mastiff, considered a colossus of a dog, and the purebred Great Pyrenees, an equally large dog.  The size and power of the Maspyr are intimidating and requires an owner who can properly handle the dog and who promotes healthy socialization.  Novice dog owners who are not exposed to large dog ownership are not an ideal match for the Maspyr.  Only two hybrid associations currently recognize the Maspyr; the Designer Breed Registry and the International Designer Canine Registry.
purpose Purpose
Protector and Companion
history Date of Origin
Unknown
ancestry Ancestry
Mastiff and Great Pyrenees

Maspyr Health

Average Size
Male Maspyr size stats
Height: 28-30 inches Weight: 110-200 lbs
Female Maspyr size stats
Height: 26-28 inches Weight: 110-200 lbs
Major Concerns
  • Pulmonic Stenosis
  • Canine Hip Dysplasia
  • Gastric Dilation Volvulus (GDV) or Bloat
Minor Concerns
  • Elbow Dysplasia
  • Cataracts
  • Retinal Dysplasia
  • Hypothyroidism
  • Atopic Dermatitis
  • Progressive Retinal Atrophy (PRA)
Occasional Diagnoses
  • Panosteitis
  • Wobbler Syndrome
Occasional Tests
  • X-Rays
  • Eye Examination
  • Internal Imaging (x-ray, CT scan, MRI, etc.)
  • Full Body Examination
  • Thyroid Testing

Maspyr Breed History

The Maspyr is a designer dog of two large purebred dogs; the Mastiff and the Great Pyrenees.  The Maspyr is not as popular a hybrid as some others, most likely due to its size and dogs may vary in size, weight, and appearance due to the lack of hybrid standards.  However, the Maspyr makes for a great family protector, and owners can review the histories of the respective parent breeds for a better understanding of their Maspyr. The Mastiff is a descendant of the Molosser dogs, who were ancient protectors of flocks and homes.  

The Mastiff is a well-documented protector and dog of war throughout the world.  However, the modern-day Mastiff developed in England during the 15th Century as a protector mainly in part due to the Lyme Hall strain of Mastiffs that were bred between the 15th and 20th centuries.  The Mastiff thrived in England during this time; however, the breed faced extinction early in the 20th century during World Wars I and II due to food shortages.  Luckily breeds imported to the United States and Canada were able to sustain the breed.  The American Kennel Club recognized the Mastiff as part of the Working Group in 1885.  

The Great Pyrenees has origins as a sheepdog in the Pyrenees Mountains, where the breed developed over 5,000 years.  The Great Pyrenees was once considered a peasant's dog used for the flock, but it caught the attention of King Louis the XIV in the 17th century and was declared the Royal Dog of France.  As a popular dog among the nobility, the Pyrenees changed its role to estate protector.  The Pyrenees left Europe for Newfoundland, Canada, where the breed experienced great popularity.  The American Kennel Club first recognized the Great Pyrenees in 1933, and the breed enjoys moderate popularity today.

Maspyr Breed Appearance

The Maspyr is a large hybrid, bordering on giant and is an excellent guardian for the home.  It most often resembles the Great Pyrenees with its head set near-level with the shoulders.  The coat is usually profuse and a light shade, though dark markings are also common on the body and face.  The Maspyr's frame is sturdy and powerful with a large brushed tail that hangs below the level of the body but curls upward.  The Maspyr's head is large, and the muzzle is medium in length and a happy expression to the mouth and lips.  The eyes of the Maspyr are large, round, and brown with a gentle expression as well.                        

Eye Color Possibilities
brown Maspyr eyes
Brown
Nose Color Possibilities
black Maspyr nose
Black
Coat Color Possibilities
brown Maspyr coat
Brown
fawn Maspyr coat
Fawn
black Maspyr coat
Black
gray Maspyr coat
Gray
white Maspyr coat
White
cream Maspyr coat
Cream
Coat Length
coat
Short Medium Long
Coat Density
coat density
pin
Sparse Normal Dense
Coat Texture
coat texture
Maspyr straight coat texture
Straight Wiry Wavy Curly Corded

Maspyr Breed Maintenance

The Maspyr has a think, dense coat and is considered a heavy shedding dog.  However, the coat is easy to maintain with just one weekly grooming session.  Using a bristle brush, remove the dead and loose hair from the coat to help with shedding concerns.  The coat is silk and soft so dirt does not cling to it and will easily fall off during grooming.  The size of the Maspyr means weekly grooming may take up to 30 minutes to finish.  Bathing the Maspyr is not recommended unless necessary because the hybrid's skin is highly sensitive.  While grooming your Maspyr, check his ears for dirt and debris, which may become trapped in the densely coated ears that drop down.  Regular teeth brushing and nail clipping will also keep your Maspyr in peak condition.

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Brushes for Maspyr
Pin Brush
Pin Brush
Comb
Comb
Nail Clipper
Nail Clipper
Brushing Frequency
fur daily fur weekly fur monthly
Maspyr requires weekly brushing
Daily Weekly Monthly

Maspyr Temperament

The Maspyr is a gentle giant of a dog that is very protective of its family, especially children.  The Maspyr may tend to bark if it resembles the Great Pyrenees, but even if it leans toward the quiet Mastiff, the sheer size of the Maspyr will deter most people.  As a large guardian, the Maspyr needs an owner who can help him socialize well.  The Maspyr is not usually dog-friendly or other pet-friendly but this also depends on proper socialization and the hybrid can learn to live well with other pets.  When it comes to training, the Maspyr tends to be hard-headed and again, requires a strong, active dog owner to help train it.  The energy levels on Maspyr are medium to high and he will need daily exercise.

Maspyr Activity Requirements

The Maspyr is an active dog that requires daily exercise of medium to high intensity.  Large breed dogs tend to be much slower, but the active Maspyr is made for high energy activities and will need to run around.  The Maspyr is not well-suited for apartment living because it needs space and a yard to run in.  Larger homes with backyards are ideal for these dogs.  The Maspyr also prefer colder climates but can tolerate warmer ones.  However, be mindful of your dog's heat levels and always provide enough water and shade while outside becuase this hybrid may overheat easy.
Activity Level
low activity medium activity high activity
Low Medium High
Rec. Walk Mileage Per Week
12 miles
walk mileage
Minutes of Activity Per Day
60 minutes
activity minutes

Maspyr Food Consumption

Cups Per Day
3.5 cups
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

Maspyr Height & Weight

6 Months
Male Maspyr size stats at six months
Height: 25.0 inches Weight: 97.5 lbs
Female Maspyr size stats at six months
Height: 24.0 inches Weight: 97.5 lbs
12 Months
Male Maspyr size stats at 12 months
Height: 28.0 inches Weight: 130.0 lbs
Female Maspyr size stats at 12 months
Height: 26.0 inches Weight: 130.0 lbs
18 Months
Male Maspyr size stats at 18 months
Height: 29.0 inches Weight: 150.0 lbs
Female Maspyr size stats at 18 months
Height: 27.0 inches Weight: 150.0 lbs

Maspyr Owner Experiences

Roman
7 Weeks
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Playing
He is 20 pounds at 7 weeks he is playful and watchful love having him
5 months, 1 week ago
Tank
6 Months
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
He's a snuggly guy and got big FAST. Really loves chewing on sticks and shoes lol.
1 year ago
Ursa
4 Months
2 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Our boy Ursa is 4 months old and weighs 30lbs. He is very friendly, especially towards women and children. Ursa's energy level is perfect for us, he gets out for 10 to 15 minutes 3 times a day. It has been -40 degrees here and he is coping well with the cold. We got him house trained and it only took him two days to get accustomed to going to the bathroom outside at his new home. He is a voracious eater, and we are putting him on a raw food diet starting this week. Ursa barely barks and just wants to be friends with our cat, our friends and their dogs and is particularly interested in our bearded dragon. It is taking him some time to learn to be extra gentle with the lizard, but he is a quick study and respond very well to commands. I would recommend this breed to anyone who works lots as he is great left on his own.
6 years, 9 months ago
Kevlar
9 Months
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
As a Retired couple that spend time with the grandkids this has been the best we have had over the years. Very gentle with the little ones, very rambunctious when playing with adults. He's never scolded but understand NO! Very perceptive when the little ones are in the back yard he has 1/2 acre as his kingdom he constantly checks on the kids and has alerted us to a snake at 6 months old. He has a proximity collar to operate the electronic dog door. He has his own room and couch and his favorite spot is head on my lap.... He's sensitive to our moods so we have started his training to become a Therapy dog during reading programs at the local elementary school and local Nursing Home.
6 years ago
Odin
3 Months
4 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
So far I love the breed though they can be stubborn. His Mom was mastiff cross Pyrenees and his dad was Pyrenees cross. House training has been difficult but it's coming. Great with kids and shows interest in horses. Out my my 3 dogs he's the only one that keeps with my kids which I love! We are hoping he can become a house guardian. Time will tell. At 3 months he's 31 lbs!
6 years ago
Cochise
3 Months
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
We got to Coach as a companion and future father for our Eng Mastiff Buttercup who is 13 months old. We bought a house and moved in late April 2019, Buttercup then 7 mos old, needed someone more to play with as we were busier than we expected we would be with home and yard improvements. He is a perfect addition to our family and our two babies are the best of friends.
5 years ago
Ino
5 Months
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
I actually have two girls. They are sisters and they have very different but great personalities.
4 years, 4 months ago
Jayla
2 Months
4 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Just got her today she's fun strong and very happy
4 years, 3 months ago
Mia
3 Years
5 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Playing fetch
snuggling
Running
She is protective when she needs to be and very lovable all other times. She does require a lot of activities or toys to keep her busy.
4 years, 1 month ago
Koda
1 Month
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
I dont have any experience with the Master. I am new to this breed.
3 years, 11 months ago
Luna
4 Years
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Daily walks and fetch sessions . Swimming and hiking
Chasing snow ball and enjoying the outdoors with th
Lots of cuddle time and affection
Luna is very smart,was easy to train very friendly with other people and pets and is exceptional with children.
3 years, 10 months ago
Arlo
6 Weeks
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Playing with toy rope and sleeping right now
Fun right now he is a great puppy first time having a mastiff mix have had great Pyrenees before.
3 years, 7 months ago
Duke
8 Months
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walking
Go to Beach
Hike
Play keep away
Tug-of-war
Nap
Chase
Fetch
Runnin
Laying in the sun
He is my best friend & the best dog I’ve had. Great loyal dog & very protective about his family & territory. Loves to lay down & cuddle love him with all my heart.
3 years, 6 months ago
Samson
8 Weeks
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
I am picking him up in the morning He is tan in color and I live on 2 acres and we go to the park every weekend. I plan on taking him walking every morning and evening with me. I am a single Dad of 2 loving kids I get every weekend and they actually picked him out and named him.
3 years, 6 months ago
Whiteboy
4 Months
1 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walking
Just learning about the breed
3 years, 5 months ago
Harold
18 Months
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Wrestle
Fetch
Walking
My mother in law found a listing for his litter online around Christmas 2019. I was pregnant with my first child and we thought if we were going to have pets again, it should be the right time to get one. We wanted a puppy so that it would grow with our baby. The listing we found Harold in was from a breeder but this particular litter happened by accident and so their pricing was super affordable for us. So we went and got him! We were also in the middle of moving from an apartment to a house with a yard so it was perfect. The house we ended up buying already had a doggy door and it took him a day to figure out how to use it. After that, training him with basic commands was also a breeze. But of course my husband and I worked on him. I even got him to pay attention to my hand signals. Harold is only 5 months older than my son so these two have a special bond. I saw it form from the day we came back from the hospital with him. Harold was very cautious and patient around our baby during the first few months. He kept adjusting to my son's capabilities and age. Even now, my son is coming into his toddler personality and Harold has stayed careful around him. Definitely a great breed. Perfect for families.
3 years, 5 months ago
Artemis
6 Years
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Learn a new trick
Walk
Guard dog
Artemis was from an accidental litter between a Mastiff mother and a working Great Pyrenees father. She was supposed to be a guard dog for sheep, but she didn’t care about livestock, she wanted to guard humans. So she is a house pet. She is very watchful with a powerful deep bark, but friendly once introduced. She is mostly a couch potato, but likes to keep an eye on the people and the front yard, in case of things to bark at. Safe with cats, dogs, chickens, but not with quail. “Talks” a lot, sheds like mad, has been healthy.
3 years, 4 months ago
Animal Expert Question Icon
Question - My pet
Question

How much should my male maspyr weight at 9 months old?

Answer
Weight guidelines in mixed breeds are always variable as it depends which genes they've inherited from each side. Rather than focusing on weight we should assess the Body Condition Score and ensure he is a healthy 4 or 5 out of 9 at all times. As a rough guide, most will have completed about 70% of their growth at this age and will weigh between 90 and 110 lbs.
3 years, 8 months ago
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