As you can see from the weight chart, the old Doberman weight adage, 10 lbs. a month, is pretty accurate. That is, you can estimate your dogs weight during its first 10 months simply by multiplying 10 by its age in month. At 6 months old, Atlas was 60 lbs. At 5 months old, he was 50 lbs. I will continue to chart Atlas growth until ...