Bullmastiff and English Mastiff?

To put it very simply, the average Bullmastiff is smaller and sharper than the average Mastiff.

In more detail.. There are differences in appearance.

- Bullmastiffs are generally considerably shorter than Male Bullmastiffs are 25 to 27 inches tall at the shoulder; male Mastiffs are a minimum of 30 inches at the shoulder. Female Bullmastiffs are 24 to 26 inches tall at the shoulder; female Mastiffs are a minimum of 28 inches. A very tall male Mastiff could easily be ten inches taller than a short female Bullmastiff.

- Mastiffs are heavier; they can be twice as heavy as Bullmastiffs. Male Bullmastiffs should be between 110 and 130 pounds; male Mastiffs, at least 160 pounds (often as much as 220 pounds or so). Female Bullmastiffs should be between 100 and 120 pounds; female Mastiffs, a minimum of 150 pounds (up to roughly 210 pounds).

- The Bullmastiff's facial features are typically influenced by the Bulldog blood -- they're usually more brachycephalic, meaning that their muzzles are shorter and more squashed, and their ears tend to be noticeably smaller.

- It's also common for Mastiffs to have looser skin -- more wrinkles, droopier jowls, so on and so forth.

Here's a Mastiff:

http://animal-world.com/dogs/Working-Dog-Breeds/im...

Here's a Bullmastiff:

http://www.cutepuppiesforsale.net/wp-content/uploa...

The Mastiff has a longer snout, looser skin, bigger ears, and is larger. ..And, in my opinion, way cuter, but that's just me!

There are differences in temperament as well, of course. Like I said, the Bullmastiff is "sharper" than the mellow Mastiff.

- Bullmastiffs are generally more likely to be dog aggressive. Quality breeding and thorough socialization should certainly help prevent this, of course, but the Bullmastiff is more confident and domineering, and as such, may clash with other dogs of similar temperament (particularly if they're the same sex).

- Bullmastiffs tend to be a little more wary of strangers. The Mastiff is a guardian, but he's been used for various roles (usually of a more violent nature, like battle, bear-baiting, lion-baiting, etc.). The Bullmastiff was created solely for the guardian function, and he may require more stringent socialization to ensure that he is safe and friendly (not to imply, of course, that the Mastiff doesn't require thorough socialization).

- Bullmastiffs may be more independent and.. forceful. For example, each breed is known for a stereotypical response to an intruder. The Mastiff tends to corner the intruder and keep him trapped until his owner arrives; he doesn't resort to physical aggression unless necessary. The Bullmastiff is known for tackling and physically holding an intruder down. This predisposition to thinking for oneself may translate into a slightly more difficult dog to train.

- Bullmastiffs are usually more athletic. Neither breed is usually very energetic as a whole, but Bullmastiffs do typically require harder, longer exercise. It's not a huge difference, but it's definitely there nonetheless.

- The Bullmastiff may be more likely to have a well-defined prey drive. Mastiffs should be gentle, patient and tolerant with all beings, but the Bullmastiff might be a little more likely to go after squirrels, for example.

The Mastiff is an ancient British breed and its history can be

traced back over 2,000 years. The Bullmastiff is a relatively

recent breed developed from crossing Mastiff (60%) and Bulldog

(40%) stock. The Bullmastiff's shorter, more compact, more

muscular look; shorter muzzle; higher energy level and greater

stubbornness are derived from the Bulldog part of the

Bullmastiff's ancestry.

The most noticeable differences are temperament, the conformation

of the heads and overall size of the dogs.

Mastiffs have a mellower, more relaxed temperament, compared to

the pushier, more active temperament of the typical Bullmastiff.

The Mastiff's forehead should be slightly curved and the stop

(indentation between the eyes) well marked but not too abrupt

while the Bullmastiff's forehead should be flat and the stop

moderate.

Mastiff males should be at least 30" at the shoulder and females

27 1/2" at the shoulder, with no upper limit for height.

Bullmastiff males should be between 25-27" at the shoulder and

females 24-26" at the shoulder.

Weight ranges differ significantly between the breeds, with the

Bullmastiff being smaller as well as more compact. The Bullmastiff

Standard lists 110-130 pounds for males, 100-120 pounds for

females. While the Mastiff Standard specifies no weight ranges,

males weights usually run 160 pounds and up, females 120 pounds

and up.

"The Mastiff is an ancient British breed and its history can be traced back over 2,000 years.

The Bullmastiff is a relatively recent breed developed from crossing Mastiff (60%) and Bulldog

(40%) stock.

The Bullmastiff's shorter, more compact, more muscular look; shorter muzzle; higher energy level and greater stubbornness are derived from the Bulldog part of the Bullmastiff's ancestry.

The most noticeable differences are temperament, the conformation of the heads and overall size of the dogs.

Mastiffs have a mellower, more relaxed temperament, compared to the pushier, more active temperament of the typical Bullmastiff.

The Mastiff's forehead should be slightly curved and the stop (indentation between the eyes) well marked but not too abrupt while the Bullmastiff's forehead should be flat and the stop

moderate.

Mastiff males should be at least 30" at the shoulder and females 27 1/2" at the shoulder, with no upper limit for height.

Bullmastiff males should be between 25-27" at the shoulder and females 24-26" at the shoulder.

Weight ranges differ significantly between the breeds, with the Bullmastiff being smaller as well as more compact. The Bullmastiff Standard lists 110-130 pounds for males, 100-120 pounds for

females.

While the Mastiff Standard specifies no weight ranges,males weights usually run 160 pounds and up, females 120 pounds and up."

in simple terms desire to show out that an English Mastiff isn't a Bullmastiff, they are 2 seperate breeds and there is no such component as an English Bullmastiff. I very own an English Mastiff alng with a Boxer and a Dalmatian and the Mastiff is a stunning canines to possess, yet require a sturdy guidance technique.

Both are large molosser dogs. The Bullmastiff is basically a Mastiff crossed with a Bulldog hundreds of years ago and bred as a purebred.