There are many different breeds of guard dogs, each with their own characteristics. Here are some common guard dog breeds: German Shepherd - Known for its intelligence, loyalty, and protective instincts, it is one of the most popular working dogs in the world. Rottweiler - Strong, brave, and very territorial, it is an excellent family guard dog. Doberman Pinscher - Handsome in appearance, muscular and alert, suitable as a guard dog. Pitbull - Powerful, with a powerful bite, requires rigorous training and socialization to become a suitable guard dog.

Tibetan Mastiff - Originating from Tibet, China, it is a large and powerful dog breed with a strong territorial protection instinct.

Caucasian Dog - Hailing from the Caucasus region, it is one of the largest dog breeds in the world and is extremely loyal and protective of its territory. English Bullmastiff - A strong and courageous guard dog that combines the characteristics of the English Bulldog and the Mastiff. Saint Bernard - Although docile in appearance, it can display strong protective instincts when necessary. Pharaoh Hound - a traditional French hunting dog with a good sense of smell and a territorial nature. Afghan Hound - Although generally considered a show dog, its independent and alert nature allows it to also serve as a guard dog.