I don't have a lot of knowledge on this breed. I have seen them. I was at a dog show. There were over 75 Black Russian terriers. They were beautiful dogs. This caused me to do a little research on them. Keep in mind I said a little. It is my understanding that they were bred to do military work. The excel in doing guardian type work.

I'm not a huge fan of most modern day GSD. It is just my opinion that a Black Russian Terrier would be a great dog for this type of work when compared to a GSD. My preference would be them. Having not worked them or owned one I am basing my opinions and preferences on what I read about the breed, seeing them in person and experience with modern day GSD.