From cute to vicious, these guard dogs have been trained to protect you against the most violent attackers.
Both guard dogs and watchdogs bark loudly to alert their owners of an intruder’s presence and to scare away the intruder. The watch dog’s function ends here; a guard dog is capable of attacking, or restraining the intruder.
Livestock guardian dogs are often large enough, 100-200 lbs and strong enough to attack and drive away livestock predators such as wolves.