Bullmasador Dog Breed Health, Temperament, Grooming, Feeding and Puppies

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  • Weight: 70-140 lb
  • Lifespan: 10-12 years
  • Group: not applicable
  • Best Suited For: committed and active owners, families with children, those looking for a companion watchdog
  • Temperament: gentle, playful, protective
  • Comparable Breeds: Labrador Retriever, Bullmastiff

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Bullmasador Basics

The Bullmasador blends the gentle nature of the Labrador retriever with the strength and size of a Bullmastiff; rewarding pet owners with a wonderful family pet who is great with kids, eager to please and ready to assume the role of watchdog as needed.

The Bullmasador blends the gentle nature of the Labrador retriever
with the strength and size of a Bullmastiff.


While today Bullmasadors are a highly popular breed, the exact origin of this hybrid is unclear, it does bring together two well-known dogs – the Labrador retriever a breed that harkens back to the mid-19th century Canada, and the Bullmastiff, a working breed dog that originated in Britain around the same time. The Bullmasador is likely the result of a desire amongst pet owners for a smaller yet still sturdy variation on the extremely large Bullmastiff breed.


As a hybrid, the Bullmasador is not recognized by the American Kennel Club (AKC) however he does have pedigree lineage. The Labrador retriever became a member of AKC’s “sporting” group back in 1917 and is identified by the group as being friendly, active and outgoing. The Bull Mastiff joined AKC’s “working” group as recently as 1934 and is described as affectionate, loyal and brave.

Food / Diet

The Bullmasador can eat up to 5.25 cups of dry kibble each day so you’ll need a food that delivers the right balance of nutrients to help prevent joints, muscles, and bones from breaking down. Many blends also include the joint supplement glucosamine to further improve orthopedic health. Because he can be prone to a serious condition known as “bloat” he should be fed via multiple smaller meals throughout the day (versus free feeding), in a bowl or dish that sits on the floor (versus raised feeder), be a large kibble format to slow gobbling, and not have a high-fat content (e.g. not include oil or fat in the first four ingredients on the label).

As a hybrid, the Bullmasador is not recognized by the American Kennel Club (AKC) however he does have pedigree lineage


The intelligent Bullmasador is keen to please so will listen carefully and obey quickly. That said, he can be a handful for a first-time owner of a large breed dog so patience, consistency and rewards-based training will be key to obedience and socialization of this gentle giant. If too daunting, consider hiring a professional dog trainer to get your pooch on track from the very start.


The Bullmasador is still considered one of the largest breeds around and when fully grown, can weigh between 70-140 pounds.

Temperament / Behavior

In spite of his large size, Bullmasadors are known to be a loyal, gentle breed that loves to be part of family activities – particularly when it’s playtime. His faithful nature and urge to protect means he will not hesitate to bark when he feels an intruder is present and he will defend his owner if the need arises. In spite of his energetic nature, this dog is highly adaptive to his environment and does well when indoors.

Common Health Problems

As with many large breed dogs, Bullmasadors are prone to joint issues that include hip and elbow dysplasia as well as arthritis. He is also known to have a relatively high incidence of lymphoma and mast cell tumours and can experience “bloat”, a digestive disorder of the stomach that can prove fatal if not monitored.

Life Expectancy

The Bullmasador has a life expectancy of 10 to 12 years. His lifespan is somewhat shorter than average for breeds.

Exercise Requirements

Bullmasadors require regular, daily exercise. He isn’t high-energy, so long walks should suffice but he does need to get out and work those muscles. A large fenced yard where he can get out to stretch and explore is the ideal home set up. Puppies in particular need to be kept active and a large backyard will allow him to explore, chase a ball, burn off some energy and start to tone his muscles. Bullmasadors are prone to heat stroke, so on very hot days you may want to fill a kiddy pool for him to cool off in, or bring him inside periodically to get him out of the sun.

Bullmasadors are known to be a loyal, gentle breed that loves to be part of family activities – particularly when it’s playtime.

Recognized Clubs

As a hybrid dog, the Bullmasador is not recognized by the American Kennel Club, however he is a member of the Designer Breed Registry (DBR), the American Canine Hybrid Club (ACHC), the Designer Dogs Kennel Club (DDKC), the International Designer Canine Registry (IDCR) and the Dog Registry of America, Inc. (DRA).


Bullmasador’s have a short, dense, double coat that is relatively easy to maintain. Minimal shedding make him a great fit for owners who don’t want the daily brushing/vacuuming routine that can come with other large breeds. Black and red coats are most typical of the breed, though they can be found with a fawn, brindle or even full black coat. Because he can be prone to ear and eye infections, regular cleaning should be part of the grooming routine.


Bullmasador pups continue to grow up to 18 months of age (or older). As his weight could tip 140 pounds, this is a lot of growing over a relatively short period and it makes him highly sensitive to nutrient and caloric intake. Imbalances, deficiencies, and excesses all negatively impact the health of a large breed puppy as growing too quickly can result in joint and bone issues later in life. His diet needs to be specifically formulated to be lower in fat, lower in calcium, lower in phosphorus and lower in vitamin D then regular puppy food. Feed him several smaller meals throughout the day versus free feeding and monitor his weight to ensure he stays within a healthy range. Your vet can share details on what that range should be.

Photo credit: eriklam/Bigstock; desertsolitaire/Bigstock; Julia_Shumenko/Bigstock

Watch the video: Golden Retriever 101 - Feeding, Grooming, Exercise, Training u0026 Health Care of a Golden Retriever


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