By Sergey Uhanov (Certified Veterinarian)Dr. Sergey Uhanov Last updated: 18th February 2026

English Mastweiler

By

Sergey Uhanov (Certified Veterinarian) Dr. Sergey Uhanov
Last updated: 18th February 2026

The English Mastweiler is a designer breed created by crossing the Rottweiler and English Mastiff. Belonging to the category of a bandogge, this breed shows inconsistency as far as its body structure is concerned as it may be tall, heavy and muscular in appearance or even have a short and lean stature. These broad-headed dogs have a strong muzzle and loose skin. Their alert, watchful nature make them excellent guard dogs, a trait highly inherited from both their parent who have gained a lot of popularity for their guarding ability.

English Mastweiler Pictures

Quick Information

Coat Short, flat and thick
Color Black, brown, dark brindle, black and tan, chocolate, silver, merle, speckled, golden, spotted
Breed Type Crossbreed
Group (of Breed) Designer dog
Lifespan 9 to 13 years
Size Big
Weight 110 to 150 pounds
Height About 26 inches
Temperament Well-tempered, Courageous, Loyal and Protective.
Good with Children Yes especially when socialized though supervision is needed
Hypoallergenic No
Barking Does not always bark except when seeing a stranger, emitting a growl while playing.
Shedding Low to Average
Originated in England
Competitive Registration/ Qualification Information ACHC (American Canine Hybrid Club), DRA (Dog Registry of America, Inc.), IDCR (International Designer Canine Registry), DDKC (Designer Dogs Kennel Club)

English Mastweiler Puppy Video


History

This breed was said to have been developed by a group of dog enthusiasts in Birmingham with the intention of creating a Molosser breed with a large body-buildup. They wanted it to be superior to the English Mastiff in terms of agility, ability to work, guarding skills, and discharging duties assigned by police and military officials were concerned. They also desired dogs that would be well-trained and emerge as good family companions. Therefore, after importing the Rottweiler breed from Germany, they started crossing it with the Bullmastiffs, English mastiffs and Neapolitan mastiff available in the United Kingdom. It has been speculated that genes of Great Dane, Presa Canario, and Irish Staffordshire Bull Terrier have also been implemented while carrying out the breeding program.

Temperament and Personality

Having a gentle disposition, the Mastweiler shows an immense amount of loyalty to its owners and his family. It is highly protective about its household and territory, going to any extent to safeguard them, just like their Rottweiler and Mastiff parents. The guarding instinct of this breed makes it highly aversive to strangers compelling it to bark at the sight of an unfamiliar face to alarm its master about the intruder. In spite of being gentle with children, careful supervision of an adult is needed when the little ones are in the company of these dogs. In fact these large-sized dogs may knocking down the toddlers when at play with them. Though it thrives well in warm weathers, it is more comfortable in living in cold temperatures.  It may let out a growl while playing or being frightened, also reacting to the sound of a siren.

Care

Exercise

As these dogs are highly agile, capable of jumping to a great height without getting easily exhausted, owners should make it a point to make their pets exercise on a daily basis to ensure physical and mental fitness.

Grooming

These easy-to-maintain dogs do not need too much of grooming. Brush their coat frequently for removing the dead hairs. Keeping their eyes and ears clean minimizes the chances of infections.

Health Problems

The English Mastweiler is said to have a very sensitive stomach, being allergic to corn and chicken. They may even encounter a problem of trembling muscles and ear infections.

Training

These intelligent dogs are fast learners, but may display stubborn and disobedient behavior at times. Therefore, a patient and tactful trainer is essential to lead them in a proper direction. Imparting obedience and socialization training to them since their puppy days may help in developing their personality in a pleasant manner. Owners should incorporate positive reinforcement methods to make the training process a fruitful one.

Feeding

They should be given about four and a half to six cups of dry dog food three times a day. Introduce nutritious foods in their diet to keep them healthy. As they often have problems of with the stomach be careful about the kind of food you are providing them.

FAQ’s

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English Mastweilers are known for being loyal, protective, and intelligent. They tend to be calm and gentle with family members but can be wary of strangers. Early socialization helps ensure they develop a well-balanced temperament.

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English Mastweilers are large dogs, usually weighing between 130 to 160 pounds and standing around 25 to 28 inches tall at the shoulder. Their size reflects their Mastiff and Rottweiler heritage, requiring ample space and strong handling.

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English Mastweilers have a short to medium double coat that sheds moderately year-round, with heavier shedding during seasonal changes. Regular brushing once or twice a week helps control shedding and keeps their coat healthy.

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English Mastweilers are intelligent and eager to please but can be stubborn without consistent training. Early obedience training with positive reinforcement methods is important to manage their protective instincts and strong will.

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Like many large breeds, English Mastweilers may be prone to hip dysplasia, joint issues, and heart conditions. Regular veterinary check-ups and a healthy diet are essential; always consult your vet for specific health concerns.

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English Mastweilers can be good with children and pets if socialized early and supervised properly. Their protective nature means they should be introduced carefully to other animals and taught appropriate behavior around kids.

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English Mastweilers require moderate daily exercise, such as a couple of 30-minute walks and playtime, to maintain their physical and mental health. Avoid overly strenuous activities due to their large size and potential joint issues.

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The average lifespan of an English Mastweiler is typically around 8 to 12 years. Providing a balanced diet, regular exercise, and routine veterinary care can help maximize their lifespan.

17 responses to “English Mastweiler”

  1. Gene Davis says:

    I have a black mastweiller 3 months old

  2. sue smaw says:

    I am looking for rottwilermast puppy

  3. Meg g says:

    Looking for a mastwiler puppy we live in New England. Anyone close with a litter please email me [email protected]

  4. baudin says:

    The American bandog is not a race but just one of the lines of mastiff just like the yorkshire bandog, German bandog etc …….. the only thing to see and that they have names that please

  5. Gina says:

    I am looking for a female mastweiler any age, in missouri or Illinois

    • Blossom McCracken says:

      I have a verg protected female and male. They are brother and sister all red with dock tails. Female weight 130 Male 180.Will to give them to good hones with lots of space to run. Will protect your family with there life. Act likes puppies until they are 3 years old. I love them so. Much but my lupuus is getting bad so I am noit able to take care of them. Please gett back to me asap. 49 people wants them but I need to see who is the best canidates.

      • Pamela J Rudolph says:

        You cant spell. Probably cant raise a special breed of dog such as this.

        • Jimmy says:

          Your comment is ridiculous and isnt needed,maybe keep you stupid ass remarks to yourself. Maybe you shouldn’t deal with these breeds because of your dumb ass thinks spelling has something to do with training.

  6. David Tompkins says:

    I recently put down what I think was a Mastweiler. He was 12 or 13. I am looking to replace him. I live in Texas

    • Blossom McCracken says:

      I have a beautiffuul one he is 2 yrs. Old He last weightt 180 but he may have llost weight very big head. His all red with a dock taaill. We live in Richhardson Tx 75080. I got him as a puppy and paid. $2700 foor each dog. It was him and his sister. Very well protected dogs. They still act like pupppies. Im willing to give them to good homes since I am very ill. Please contact me asap.

    • Etta E Bernhard says:

      I have a litter born today. 8 males

      • Barb Perry says:

        Hi Etta I have been looking for a male mastweiler puppie for a while now so I am very interested in finding more info about yours location, price coloring etc. My phone number is 763-447-8768 I am available after 3:30 or my email is [email protected]

        Thank you
        Sincerely
        Barb Perry

      • Jen says:

        Still have puppies? If so any pics? Lost my mastweiller 2 years ago last Christmas. He was 11.

        • Brandon says:

          I have one male neo and rotty left he looks more of the rotty but markings are brendle my nimber is 5055921433 out in farmington nm

  7. David Tompkins says:

    I am looking for an English mastweiler puppy that is less expensive. Are there any in Texas?

    • Blossom McCracken says:

      Yes 2 nale and femake 2 yes old all red with dock tails in Richardson TX 75080. Each was purchase for $2700 ea.puppies totalung $5500 with tax. I am willing to give them to someone that will love them more them me.

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