>There are no “punishments” for bad behavior; there are only rewards for good behavior and the -absence- of reward [or attention] for bad behavior.
For dogs who desperately desire their master’s loving, *happy* attention, simply being ignored drives the point home very quickly.
With any breed considered “aggressive”, aggressive treatment only breeds more aggression in the dog and they
-will- learn to suppress the overt, normal signals such as “warning growls” and go right to a bite if they have been “punished” for growling.<
A friend of mine has a very effective method for curing a dog that barks and screeches in its crate after the family has gone to bed. She gets up, takes the nail clippers she keeps at the ready, and proceeds to clip a couple of toenails attached to the offending dog. She then puts said big mouth back to bed, and she shuts of the lights and retires herself.
The dog gets the message loud and clear that nighttime is for sleeping.
OMG....she is such a devious genius!....LOL!