6 month Male Black Russian Terrier

He is 6months old and unfortunately I do not have the time to train. He needs to be in a home that is familiar with the Black Russian terrier breed. He will get to 150lbs full grown. He has been microchipped, has his passport (I purchased from a breeder in Ukraine), has had his first set of puppy shots as well. Please only contact me if seriously interested and have experience with larger breed dogs. He is a beautiful dog, but he didn’t do well with my senior boxer who is 12yrs old. Would need to work with him with socializing with other dogs. Does fine in house with children. Feel free to reach out for additional information