Well, the thing is, on some levels if you know the cause, or can really guess it.. of course that is the aspect you address. I just meant if you don't KNOW, don't make it up… you can treat without knowing. And seeing as they are dogs, you may not ever KNOW.
If the dog is fine home alone but hates a crate, you work on crate or options to crating.
If the dog is bored in the crate, you get a huge one or give toys and things to keep busy to help.
If your dog has actual separation anxiety about being alone, you try to desensitize it, or get it a companion, or get a pet sitter.
I didn't mean to say it is not ever important, it can be.
But to make up some silly thing like dogs are worried their owner needs them to protect them.. that bugs me. If you KNOW the reason, address it. If not, then move on and try each area til you find what works.
I truly think ALL breeds of dogs run the spectrum in why. And for the most part, even if you don't know why, you can still work on eliminating the behaviors.
That said, dogs with serious phobias, be it noise or separation anxiety... I have seen some horrible cases where the owners managed to really make very little dent and barely keep livable. Please don't anyone think I imagine it is simple or easy fix.