I have known many years ago two dobermans
A male and female
The male was soft as anything but the female was quite nasty(she had to be put in the garden when visitors came to the house

I was probably about 16 at the time but still remeber it well
I think like rotties, staffies and even GSD's they do get a bad name because of irresponsible owners ect

No dog can be fully domesticated IMO They will always have a wild streak in them.
Linda x