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Dog Pound

Learn About Bullmastiffs

Bullmastiffs comprise a breed of large-sized dog originally bred in England in the 19th century. They were first bred for use as guard dogs, and were put to work assisting wardens and gamekeepers. Bullmastiffs were first created by crossing English Mastiffs with Old English Bulldogs, with Mastiff heritage being more present in the ultimate product's genotype than that of Bulldogs. The Bullmastiff was first recognized as a breed in the early to mid-20th century.

Bullmastiffs are smaller than true Mastiffs, measuring 25-27 inches in height and weighing 100-130 pounds. Young Bullmastiffs continue to grow for longer than smaller breeds, becoming fully grown at about three and a half years of age. They are sexually dimorphic in that males are slightly larger than females. Bullmastiffs are bulky, solidly-built dogs and have wide, deep chests; short, straight backs; large heads; and short, square muzzles. Their skin is wrinkled on their heads and muzzles.

Bullmastiffs' coats are short and dense, and feel slightly rough to the touch. They may have a red, fawn, or brindle coat. Brindle Bullmastiffs have a base coat color of red or fawn that is overlaid with the brindle pattern. Some white fur may appear on a Bullmastiff's chest. Bullmastiffs have characteristic masks of black on their muzzles, black markings around their eyes, and black or darkly colored ears. A certain genetic anomaly may cause a Bullmastiff to have either a liver-colored mask, or no mask at all.

Bullmastiffs are truly gentle giants; they love the company of people, crave attention, and have amiable, docile temperaments. They are devoted and loyal to their humans, and are highly responsive and obedient to strong, confident leadership. Though they are unlikely to attack a person, they make good watchdogs and guard dogs, as they tend to bark on alarm and will knock and hold down any intruders. Bullmastiffs may be aggressive toward other dogs, and should therefore be socialized carefully to avoid or minimize this behavior.

Bullmastiffs make great family dogs, as they are known to be excellent with children, particularly when raised with them. However, one should be sure to supervise very small children with Bullmastiffs, as accidents, while unlikely, are possible due to their sheer size. They require daily exercise and do best with at least a small yard at their disposal; however, they will fare well in an apartment if they are adequately exercised. Bullmastiffs cannot tolerate extreme temperatures, and do particularly poorly in hot weather.

Though they have a somewhat demanding exercise requirement, Bullmastiffs are very low-maintenance with respect to grooming. Though they do not require frequent grooming, they shed a fair amount, which may make brushing a Bullmastiff once or twice a week ideal so that shedding can be kept at a minimum. Bullmastiffs are known to drool a fair amount, and may snore while sleeping. Bullmastiffs are prone to hip dysplasia, with about one quarter of all Bullmastiffs being afflicted by the disorder in their lifetimes. They are also prone to elbow dysplasia, progressive retinal atrophy, cancer, arthritis, hypothyroidism, bloating, and becoming overweight. On average, Bullmastiffs live for 8-10 years.

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