The Bull Mastweiler: A Complete Guide

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This dog is the hybrid combination of the Bullmastiff and the Rottweiler. Both of the parenting breeds have a history of being incredible guard dogs and are large, strong, and very loyal.

The Bull Mastweiler is great with large families and will guard your property with its very life. They aren’t all brawn though. They are also known for being very loving and affectionate dogs as well.

The Bullmastiff was first bred in the 19th Century by European landowners seeking to keep their estate guarded.

Poaching was a common crime back in those days, and the peasants would often sneak onto the landlord’s property and try to hunt his game.

The Bullmastiff would roam through the forests and serve as a deterrent for these people. It is a very large dog, with a fearsome stance.

They are known for being very protective and must be socialized in their puppyhood with the family who they’re going to be living with.

Rottweilers have a very similar history as well. They were also used as guard dogs.

They are a very old breed of dog, and they were used by the ancient Roman military to guard their cattle flocks while they were on long marches.

After the decline of the Roman empire and on into the Middle Ages, the Rottweilers were commonly used by butchers and other traveling merchants to keep them safe.

The Rottweilers would prove to be fearsome opponents for any would-be thieves.

The hybrid Bull Mastweiler is a dog that can be both a fearsome guard dog and a loyal companion.

They will protect your family as their own, and they also love to play games like fetch and go out on runs. When they aren’t guarding their owner’s house, these dogs are also very social with other dogs.

Bull Mastweiler Puppies – Before You Buy…

A Bull Mastweiler sitting on the grass
The Bull Mastweilers love to run around and play.

Bull Mastweiler puppies can be quite a handful and require careful training and need lots of space to run around outside.

However, if you can provide this, then they are a great option to consider.

Let’s take a look at some of the most commonly asked questions by first-time owners.

What Price are Bull Mastweiler Puppies?

The cheapest that you’ll be able to bring home a Bull Mastweiler puppy for is about $1,800. This high number can turn a lot of buyers away, but you have to think about the deal that you’re getting.

This is the hybrid combination of two of the best guard dogs in the world.

The price is a reflection of the price of both of the parenting dogs. Rottweilers typically cost right around $2,000, and the even the cheapest Bull Mastiff costs around $1,400.

How to Find Reputable Bull Mastweiler Breeders?

It’s uncommon to find a breeder who will try and fake this dog. The Bull Mastweiler is a very specific dog, and it’s hard to confuse with any other dog.

The only other canine that this dog could pass for is a Mastiff puppy, but even then the differences would stand out.

This dog is primarily bred as a guard dog, so your best bet to find a quality breeder is to look for a small-scale breeder that specializes primarily in breeding dogs who guard high-end homes.

3 Little-known facts about Bull Mastweiler puppies

  1. The Bull Mastweiler needs to be socialized with their families early in their development.
  2. These puppies need to have plenty of outdoor space to run around and play in. They were originally bred as outdoor guard dogs, and they have lots of energy.
  3. Bull Mastweiler puppies are constantly seeking the affection and attention of their owners. It’s important to give them this, or they can develop aggressive behaviors over time.

Physical Traits of the Bull Mastweiler

A mix of the Bullmastiff and the Rottweiler
The Bull Mastweilers don’t like to live indoors.

These dogs tend to take after the Bull Mastiff in their body shape and features.

They are large and have very long powerful legs. This makes them very fast runners. One of their favorite things to do is go on long runs or tag along behind a bicycle.

Just make sure that they get plenty of water so that they don’t overheat. Their fur usually tends to be short and light brown. This makes them very easy to groom and wash.

You can keep them in immaculate condition by just brushing them once a week and washing them once every two weeks.

It is often very common to see them with a black spot around their eyes. This is often the only feature that they get from the Rottweiler.

The Bull Mastweiler’s head tends to be inherited from the Rottweiler. They have a large, rounded skull, with medium-sized ears that hang by the side of its head.

This dog’s snout is long, and their upper lip hangs down lazily.

One interesting thing to note about their eyes is that they tend to be rather far apart. This gives them excellent peripheral vision and is part of what makes them the excellent watchdogs that they are.

The Bull Mastweiler has a very long body as well. Viewing them directly from the front, it’s easy to miss just how large they are, but once you see the side profile, then you’ll realize where this dog gets all of its weight from.

How Big is a Full-Grown Bull Mastweiler?

These dogs average 120 pounds when they are full grown. It is very common for them to grow up to 135 pounds if they are fed a high-protein diet and are given plenty of exercise.

The smallest that you will ever see one of these dogs is 85 or 90 pounds, and you will only find this in the runts.

Looking at their height, they usually stand about 2 feet tall. If they inherit more from the Rottweiler and have shorter legs, then they may only grow to be around 18 inches tall.

What is the Life Expectancy of the Bull Mastweiler?

The Bull Mastweiler has an average life expectancy of about 11 years. This is normal for a dog of this size since their large size tends to affect their health over time.

These dogs will live the majority of their lives in healthy and active conditions, though. In their last year of life, you will see a decrease in overall activity, and they will often become sedentary.

Intelligence, Temperament and Personality Traits of the Bull Mastweiler

These dogs are very intelligent animals and respond well to training at an early age. You must teach them when they are still puppies, however.

If you wait until they are full-grown, then they will be a lot harder to train. They will often develop rebellious and aggressive behaviors especially if they aren’t spayed or neutered.

You will need to be very firm with them in their puppyhood. You can’t let any disobedient or destructive behavior go unnoticed as it will only grow further.

It is, however, important to reward them for the good work that they do. They crave praise, and when given in the right event, it can help to reinforce good habits.

The Bull Mastweiler has a very protective temperament. They are very friendly and affectionate towards their family members, but they tend to be very wary of outsiders.

If an unknown dog or person is coming over to the house, then there needs to be a proper introduction made so that your Bull Mastweiler knows that these are trustworthy people.

When they aren’t on guard duty, these dogs love to run around and play games. They can be quite playful animals and are very sociable outside of the house.

It’s a good idea to take them to a public dog park at least once or twice a week.

The Bull Mastweiler’s Diet

A light brown Bull Mastweiler lying down
The Bull Mastweilers are large and have very long legs.

These dogs need to eat a lot. It’s not uncommon for a full-grown Bull Mastweiler to eat up to 4 heaping cups of food a day.

They are large dogs, and they can easily spend hours a day outside running around which only fuels their already fast metabolism.

It is best to feed them three or four times a day, starting with a large breakfast, a good lunch, and a large dinner.

If they are extra active, then it’s a good idea to feed them some snacks in between meals.

How Much Exercise Does a Bull Mastweiler Need?

The Bull Mastweiler needs a lot of exercise. They were traditionally bred as outdoor guard-dogs and can run around outside for hours at a time.

Much of the time, these dogs prefer to live, eat, and sleep outside. If you can’t provide them with an outdoor environment, then make sure that they have a large space in your house.

They will also need to be taken out on a walk for at least 45 minutes a day.

Bull Mastweiler Health and Conditions

These dogs are relatively disease-free thanks to their Rottweiler ancestry. Like most dogs, however, in their older age, it’s common for them to suffer from Hip and Elbow Dysplasia.

You should take them to a vet at least once a year for a routine X-Ray to ensure that their bones are still in good condition.

Male Vs Female

While many dog breeds don’t differ much from one gender to the other, the Bull Mastweiler is a hybrid in which one can find many differences between a female and a male of this kind.

If you’re a first-time dog owner, it is highly advisable that you get a female Bull Mastweiler.

This is because the Bull Mastweiler is as it is quite a stubborn breed and the males amongst them can get particularly obstinate, a trait that can be difficult to work with for someone inexperienced in dog training.

It is important to remember that if you go wrong with the early training and socialization of this dog, you can end up in a lot of trouble with its behavior.

The Bull Mastweiler is very susceptible to developing an aggressive streak that can make it wary and unwelcoming of even your close friends and family.

These traits are stronger in a male Bull Mastweiler, while a female one will be less likely to exhibit aggressive behavior.

Additionally, a male Bull Mastweiler may show a stern attitude towards other dogs, but be respectful and gentle with female dogs.

A male Bull Mastweiler will also be a bit larger and heavier than its female counterpart, which gives it the added sense of power because it can tower over other pets.

Finally, a female Bull Mastweiler will be easier to get along with because she is more eager to obey her owners.

All she will require is love and attention, and once she finds herself in the presence of her human family, she will become calm and content.

On the other hand, a male Bull Mastweiler will be more interested in trying to dominate you, so it is important to let it know that you are the alpha of the house.

Final Thoughts on the Bull MastweilerBull Mastweiler dog sitting

If you have a large backyard or a big house with plenty of space, then the Bull Mastweiler is a great option for you.

They are very energetic dogs that will need to be properly trained, but if you can manage this, then you will have a loyal, obedient, and affectionate dog.

They will guard your family and your home with everything that they have, and you won’t ever have to worry about intruders with this dog around.


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