With heavy wrinkles and a rough coat, the Chinese Shar-Pei has a menacing appearance but is loving.
Known for being fierce protectors, Dobermans often appear unfriendly but are very loyal.
Rottweilers have intimidating, powerful appearances but are gentle dogs if well-trained.
With a bear-like face and serious demeanor, Chow Chows look quite imposing and aloof.
This rugged mountain breed has a thick coat and suspiciously observant nature.
Massive in size with a mane-like coat, the Tibetan Mastiff is an impressive guard dog.
The Cane Corso is known for having a threatening look and muscular frame.