The English Mastiff is an ancient dog breed. First used in England as a guard dog and fighting dog, some of the earliest ...

The Old English Mastiff, also known as the Mastiff, is a massive dog breed easily recognizable ... The South African Mastiff, also known as the Boerboel, is known for its tough, loyal demeanor. Elite ...

They were originally bred by gamekeepers to guard estates in the 19th century. They quickly got the name Gamekeeper's Night Dog. Their genetic background is 60% Mastiff and 40% Bulldog.