Bullmastiff
Bullmastiff is considered to be one of the best guard dog breeds due to its physical strength, protection instincts, and extreme family loyalty.
Doberman Pinscher
Doberman Pinscher is known for being fearless, alert and loyal. However, they need a lot of exercise.
Rottweiler
Rottweilers are extremely loyal to their owners and are aloof with strangers. They are very quick learners and thus become the best guard dogs.
Komondor
Komondor is famous for being active, courageous, and loyal. Traditionally, they were used to protect herds of sheep.
Puli
Pulis are extremely smart and known to alert their owners against any suspicious activity.