Giant Schnauzer vs Black Russian Terrier Highlights

Giant Schnauzers are usually a quiet breed.Due to its breeding, the Giant Schnauzer is inherently suspicious of strangers and can be very territorial.Once introduced, it is usually accepting of novel people or situations. It has the potential to be aggressive, but Giant Schnauzers are usually reserved- they are "amiable in repose, and a commanding figure when aroused"
Giant Schnauzers have been described as trustworthy with children.They are very intelligent, and can become bored easily. They are also very energetic and highly spirited, which, when coupled with boredom, can lead to unwanted and destructive behavior. They are easily trained, and deeply loyal to their owner. Some breeders believe that pepper and salt colored Giant Schnauzers are more docile than their black-furred counterparts.
The character and temperament of the Russian Black Terrier is of utmost importance. The Russian Black Terrier is a calm, confident, courageous and self-assured dog. He is highly intelligent and adapts well to training. The Russian Black Terrier was initially bred to guard and protect. He is alert and responsive, instinctively protective, determined, fearless, deeply loyal to family, is aloof and therefore does not relish intrusion by strangers into his personal space. Shyness or excessive excitability is a serious fault.