A dog's ability to protect its master from harm, as well as its devotion and friendship, have made it a highly sought-after pet throughout history.
On the other hand, security duty is a better fit for certain breeds than others.
Airedale terriers are intelligent and versatile, making them ideal guard dogs.
They originated in England and were bred for hunting and working.
As a breed, Airedales are excellent problem solvers and very perceptive of their surroundings.
The striking appearance of Tibetan Mastiffs is enhanced by their long, thick hair, which covers their already substantial stature.
Tibetan Mastiffs are great security dogs, but they need lots of love and attention to become the best they can be.