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Working Group

Mastiff adult and two puppies lying on ground in front of white background

Height at Shoulders

Females 27.5+ in, Males 30+ in

Weight

Females 120-170 lbs, Males 160-230 lbs

Life Expectancy

6-10 yrs

History

The Mastiff, also known as the "English Mastiff", originated in England sometime before 55 BCE, around which time Julius Caesar made a note of how impressed he was with the Mastiffs the British were using to defend their legions during his attack. He brought some back to Rome to be used to hunt and fight animals and gladiators in arenas. Over time, Mastiffs found work as hunters, guardians, and war dogs. After WWII, there were only about 14 individuals left in Britain, bringing the breed to the brink of extinction. Luckily, Mastiffs were imported back from other countries to re-establish the breed. Modern Mastiffs are much more of a docile companion animal than early Mastiffs.

Breed Characteristics

While not all Mastiffs will display the exact characteristics typical of the breed, most share a personality and temperament can be generalized by the characteristic rankings below. 

Intelligence

Affection Towards Family

Friendliness Towards Strangers

Friendliness Towards Other Dogs

Exercise Needs

★★☆☆☆

★★★★★

★★☆☆☆

★★☆☆☆

★★★☆☆

Energy Level

Sensitivity

Noise Level

Prey Drive

Shedding

★☆☆

★★★☆☆

★☆☆

★☆☆

★☆

Intelligence

★★☆☆☆


Affection Towards Family

★★★★★


Friendliness Towards Strangers

★★☆☆☆


Friendliness Towards Other Dogs

★★☆☆☆


Exercise Needs

★★★☆☆


Energy Level

★☆☆


Sensitivity

★★★☆☆


Noise Level

★☆☆


Prey Drive

★☆☆


Shedding

★☆

Common Traits

Docile, quiet, good-natured, and love to relax with family- can also be lazy

Tend to drool, snore, and have lots of flatulence

Have strong protective instincts and have been known to try to break up family arguments

May become destructive if not given the proper exercise, mental stimulation, or affection

Known to get along excellently with children