#19: Bullmastiff
The Bullmastiff was developed in 19th-century England by crossing Bulldogs and Mastiffs to create a large, agile estate guardian. Bred to apprehend poachers without causing fatal harm, they became valued for their courage, loyalty, and calm nature. Today, they are popular as both protectors and gentle family companions.

Bullmastiffs are massive and powerful, and lacking clear boundaries, they can be difficult to control. Their natural guarding instincts, if unmanaged, can escalate quickly in perceived threat situations. These factors have led many insurers to consider them higher risk despite their typically affectionate disposition.
