By temperament the breed is calm, self-assured and watchful. It is reserved with strangers and closely attached to its own family. It learns quickly and is intelligent, but it can also be independent-minded. Admirers sometimes call it the black pearl of Russia.
It is a powerful, large-boned dog, a little longer than it is tall, with a broad head and a deep chest. Its double coat is coarse and slightly wavy. The coat is always black, sometimes with scattered grey hairs. A beard, moustache and heavy eyebrows give the face a squared-off look, and the coat is usually trimmed to show the outline.
The Black Russian Terrier began as a state project rather than a companion breed. After some years of development, the Red Star kennel began releasing dogs to civilian breeders in the late nineteen-fifties. From then on, amateur clubs in Moscow and other Soviet cities shaped much of the breed's later development, selecting for a more uniform appearance and a steadier temperament while keeping its working ability. Despite its name, it is not a true terrier. Its ancestors include the Giant Schnauzer, Rottweiler, Airedale and Newfoundland, among others. It was bred to guard military sites and to work alongside soldiers.