About Bullmastiffs? Click Here for the Kennel.com
The Bullmastiff was bred by English gamekeepers
in the late 1800s due to a need for a fearless
guard dog to protect large estates and game preserves
from poachers. These breeders crossed an Old English
Bulldog (agility and tenacity) with an English
Mastiff (size, strength and loyalty). The Bullmastiff
was trained to tackle and pin down poachers, but
were trained not to bite.
The Bullmastiff is a large and powerfully built
dog. Fearless and intelligent, these dogs thrive
on being with family. It's their instinct to protect
- Bullmastiffs are extremely loyal dogs that want
The English Kennel Club recognized the Bullmastiff
as a purebred dog in 1924 and the American Kennel
Club recognized the Bullmastiff in October of
height for a Bullmastiff adult dog is 25 to 27
inches tall (63.5 to 68.5 cm) at the withers.
Females typically reach 24 to 26 inches (61 to
66 cm) at the withers.
weight for an adult Bullmastiff dog is 110 to
130 pounds (50 to 59 kg) and for females: 100
to 120 pounds (45 to 55 kg).
Coat Type: The
Bullmastiff's coat is short-haired, dense, rough.
This breed's coat is protective against the elements.
Grooming the Bullmastiff's coat is is easy and
this breed sheds very little.
Color: The color
of the Bullmastiff's coat can be red, fawn, or
brindle. Except for a very small white spot on
the chest, white marking is considered a fault.
The Bullmastiff is good-natured, calm, loyal,
courageous and loving. This breed has a very strong
protective instinct although these dogs normally
do not attack to protect. They'll pin down the
one who poses a threat with their massive build
or will stand in front of them not allowing them
to pass. Early socialization of a Bullmastiff
is imperative due to their massive size and wariness
of strangers. This breed does very well with children,
but must be careful around smaller children since
they may inadvertently knock them over possibly
Bullmastiffs are prone to certain hereditary diseases
such as arthritis, elbow dysplasia, entropion,
hip dysplasia, hypothyroidism, lymphoma cancer
and progressive retinal atrophy.
• Bullmastiffs are massive dogs possibly
weighing up to 130 lbs - which is mostly muscle.
• The Bullmastiff is also known as a Gamekeeper's
• The Bullmastiff barks less often than
• The American Kennel Club recognized the
Bullmastiff in 1933 and the first standard for
the breed was approved in 1935
ANKC: Group 6 - Utility
CKC: Group 3 - Working Dogs
FCI: Group 2 Section 2 Molossoid breeds
UKC: Guardian Dogs