Livestock Guardian Dog
They will stay outside .Siberia would not bother them. They will guard you, your family, up to and including their death, (or the Bad guys)
Flock Guardian Dogs, Flock Guards, Dogs to Protect the Livestock
Here is a link for you,
Some of them are way to scary serious, but some fit nicely into a family
"Suppose you were an idiot. And suppose you were a member of Congress.... But then I repeat myself."