you just put the lie to 'don't buy...adopt'.
the way I heard it is..regarding shepard type dogs (which you got)
if ANY dog hurt one of the flock that they were guarding...it was killed...and all of it's brothers, sisters, and cousins were killed also..
for THOUSANDS years back into the dawn of pre history this practice was followed.

what you got is the result.

All dogs are not alike..they've been bred for different task.
you picked some good ones it looks like.