Boerboel vs Bullmastiff: Size, Temperament & Guarding Style

The Boerboel and the Bullmastiff are both mastiff-type guardians, but the Bullmastiff was purpose-bred in 19th-century England to track and quietly pin poachers, giving it a distinctive restrained guarding style.

The Boerboel is larger and more all-purpose; the Bullmastiff is more compact and famously quiet.

AttributeBoerboelBullmastiff
OriginSouth AfricaEngland
Male weight150–200+ lbs110–130 lbs
Height24–27 in24–27 in
TemperamentWatchful, active guardianCalm, quiet, restrained
TrainabilityHighModerate
Energy levelModerateLow–moderate
Lifespan9–12 years7–9 years

Guarding style

The Bullmastiff was bred to confront and physically detain intruders silently rather than bark or bite, and many retain that calm, restrained nature. The Boerboel is a more active and vocal guardian that patrols and assesses.

The Boerboel is generally larger, more trainable, and longer-lived, while the Bullmastiff is more compact and lower-key indoors.

The verdict

Choose a Boerboel for a larger, more trainable, active guardian. Choose a Bullmastiff for a quieter, lower-energy home protector that's a bit easier to manage indoors.

Frequently asked questions

Is a Boerboel bigger than a Bullmastiff?

Yes. Boerboels are typically heavier at 150–200+ pounds versus roughly 110–130 pounds for Bullmastiffs, though both stand at a similar height.

Which is quieter, a Boerboel or a Bullmastiff?

The Bullmastiff is generally the quieter, more restrained guardian. The Boerboel is a more active and vocal patroller.

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