Bullmastiff vs. English Mastiff — What's the Difference?

Bullmastiffs and English Mastiffs, both breeds admired for their impressive size and demeanor, differ significantly in their origins, size, and temperament.

The Bullmastiff, a cross between the Old English Bulldog and the English Mastiff, was bred in the 19th century to guard estates from poachers. They are large, robust dogs, but smaller and more agile than English Mastiffs, weighing up to 130 pounds. Bullmastiffs are known for their bravery, loyalty, and a protective instinct that makes them excellent guard dogs.

English Mastiffs, on the other hand, are one of the largest dog breeds, with a history that dates back to ancient times. They can weigh upwards of 200 pounds, with a calm and affectionate nature. Despite their intimidating size, English Mastiffs are gentle giants, known for their patience and docility, especially around children. They serve more as gentle companions and family pets rather than guard dogs, though their sheer size can be a deterrent to intruders.

In terms of appearance, Bullmastiffs have a more defined musculature, a shorter muzzle, and a more alert expression, reflecting their breeding for guard work. English Mastiffs have a larger head, a longer muzzle, and a more laid-back demeanor. Both breeds require moderate exercise, but Bullmastiffs may have slightly higher energy levels due to their working heritage.

Healthwise, both breeds share some common issues like hip dysplasia and gastric torsion but due to their larger size, English Mastiffs may have a shorter lifespan and more joint-related issues. Both breeds make loyal family members, but their considerable size and strength mean they need a handler who can provide firm, consistent training and socialization from a young age.