Common behaviour problems

Among the most common behavior problems we hear of, are when your dog barks at people approaching your home. Most people find themselves fighting a losing battle, trying to stop their dog from barking aggressively at the door, fence, window, etc... Here's the scenario.

Dog says: "warning, warning, there's someone out there!"
You say: "Stop That Noise!"
Dog says: "But there is someone out there!"
You say: "Get Off The Door, You're Scratching It."
Dog Says: "They're Coming In! You're Not Listening To Me."
You Say: "Your Not Listening To Me! You're Scratching The Door!
Dog Says: "I'll Save You! Just Let Me Through This Door!"
You say: "Now I'm really mad! You're scratching the door! I Can't Have Them In With You Acting Like This!"
Dog Says: "Me Too! I'm Really Mad! Just Let Me Through This Door! I Can't Have Them In If They Are So Upsetting To You!"

And the situation just continues to worsen, as the dog does what he knows is best for his home and you. The dialogue just continues to become more confusing. The more concerned you become about his behavior, the more he believes you are worried about these unknown persons.
Certainly if you're worried, then he should be protective. He doesn't even realize that it's his behavior you are worried about. Here's how the scenario should be:

Dog says: "warning, warning, warning, there's someone out there!"
You say: "GOOD BOY! Who's there?"
Dog says: "I don't know, but you'd better be careful!"
You say: "good boy, I can see them, it's friends."
Dog Says: "I Don't Think So, You'd Better Be Careful!"
You say: "I can see who it is, they are friends, you're a good boy."
Dog says: "Cool! Maybe we'll have tea and biscuits!" Most dogs are simply not

validated for their efforts at doing their job, and so many problems are a result of just such misunderstandings. We have ways of dealing with all kinds of behavior, those we can observe, as well as those that (in most cases,) occur when we are not present. Most trainers agree that you cannot correct your dog after the fact. Their logic is, that dogs can't remember mistakes they committed earlier, perhaps only earlier today. How do you think dogs can remember a "lost" toy, hidden under a piece of furniture many weeks after it had gotten misplaced?

Do you really want to believe he cannot remember doing something mischievous earlier today? .