You will need to spend a significant amount of time building up to 40-minute absences because most of your dog’s anxious responses will occur within the first 40 minutes that he’s alone. This means that over weeks of conditioning, you’ll increase the duration of your departures by only a few seconds each session, or every couple of sessions, depending on your dog’s tolerance at each level. Once your dog can tolerate 40 minutes of separation from you, you can increase absences by larger chunks of time (5-minute increments at first, then later 15-minute increments). Once your dog can be alone for 90 minutes without getting upset or anxious, he can probably handle four to eight hours. (Just to be safe, try leaving him alone for four hours at first, and then work up to eight full hours over a few days.)
There are a variety of established methods of animals training, each with its adherents and critics. Some of the better known dog training procedures include the Koehler method, clicker training, motivational training, electronic training, model-rival training, dominance-based training, and relationship-based training. The common characteristics of successful methods are knowing the animal's attributes and personality, accurate timing of reinforcement and/or punishment and consistent communication. The use of punishment is controversial with both the humaneness and effectiveness questioned by many behaviourists.
To update: our German Shepherd’s sudden onset anxiety did not improve, so we took her to the vet who said this is not an uncommon development in senior dogs, and it can develop seemingly from out of nowhere. The vet said it sounds like separation anxiety, which can be triggered even if there is no separation! In our situation, it definitely seems as if bells or buzzers or ringers are a trigger…even the microwave or sports on tv! The vet also said it sounds like our dog is developing signs of canine cognitive dysfunction. She has been placed on a low dosage of Prozac, with plenty of room to increase the dosage if we don’t notice any improvement. So far, behaviors have not improved, but they have not gotten worse either. I will update after she has been on the medication for a longer period of time.
Dog intelligence is exhibited in many different ways, and a dog that might not be easy to train might nonetheless be quite adept at figuring out how to open kitchen cabinets or to escape from the yard. Novice dog owners need to consider a dog's trainability as well as its energy level, exercise requirements, and other factors before choosing a new pet. Very high intelligence is not necessarily a good thing in a companion dog, as smart dogs can require extensive daily mental stimulation if they are not to become bored and destructive.
As a pet parent, you need to act when your dog is suffering from anxiety. Avoid punishing or scolding your dog when it is having an attack. You should also avoid praising or patting because that may lead your dog to believe that you are encouraging its anxious behavior. The first step is to identify the stimulus that’s causing the reaction. Controlled exposure to the stimulus and giving rewards for positive behavior is a popular way of desensitizing the dog. It’s also advisable to seek help from a canine behavioral expert. If the problem persists, consult a vet. There are more than a few anti-anxiety medication and nutritional supplements that can help control the problem.

Profound fear and withdrawal of unknown cause (so called idiopathic fear and withdrawal) has also been noted in certain dog breeds, including the Siberian Husky, German Shorthaired Pointer, Greyhound, Chesapeake Bay Retriever, Bernese Mountain Dog, Great Pyrenees, Border Collie, and Standard Poodle, among others. There appears to be a strong familial component, with the likelihood of a genetic influence.

Other details: I go to work mondays to saturdays, leave the house at 8:30am and come back at 7pm. I am extra affectionate to both dogs, but because Keanu is bigger than his sister I always feed him or pet him first. The girl poodle(Tuna) is hardly ever agitated, but almost always calm and happy and sometimes uninterested in me – never have I seen her staring at me unless maybe i called her name. Both dogs are extremely well behaved, never bark or chew, obedient, pretty timid when seeing other dogs, happy when seeing other humans(Keanu gets agitated seeing other women around my age…)
Ask the breeder or rescue facility/group that you got your dog from f they observed any signs of anxiety. Dogs will develop anxiety in the earlier stages of their life  [14 weeks old] and how they interacted with other dogs after birth could affect their anxiety. Dogs that come from puppy mills could have higher chances of anxiety due to the conditions they were exposed to right after birth. 
The most common form of anxiety is separation anxiety in dogs, which can occur when a dog is left alone for any period of time. Separation anxiety occurs when a dog or puppy develops a phobia from being left alone. Dogs suffering from this condition may develop behavioral issues and severe stress. Often, dogs who have been adopted from a kennel have either lost a loved one or have been previously mistreated, which has caused separation anxiety to surface later on when they’re older.
Crate training can be helpful for some dogs if they learn that the crate is their safe place to go when left alone. However, for other dogs, the crate can cause added stress and anxiety. In order to determine whether or not you should try using a crate, monitor your dog’s behavior during crate training and when he’s left in the crate while you’re home. If he shows signs of distress (heavy panting, excessive salivation, frantic escape attempts, persistent howling or barking), crate confinement isn’t the best option for him. Instead of using a crate, you can try confining your dog to one room behind a baby gate. 
7. Find a shared interest. It’s okay to be disappointed that your dog doesn’t want to go to the dog park, agility trials or pavement cafés. Try focusing on what you guys can do together instead. Set up indoor obstacle courses, go on quiet wilderness hikes, take nose-work classes or just chill at home. Don’t try to force the dog you have to be the dog you wanted. In the end, you’re likely to make her problems worse, not to mention strain your relationship.

The term "observational learning" encompasses several closely related concepts: allelomimetic behavior or mimicking where, for example, puppies follow or copy others of their kind; social facilitation where the presence of another dog causes an increase in the intensity of a behavior; and local enhancement which includes pieces of social facilitation, mimicking, and trial-and-error learning, but is different from true observational learning in that the dog actively participates in the behavior in the presence of the other dog and/or other environmental cues.[53] Four necessary conditions for observational learning are: attention, retention, motivation, and production. That is, the dog must pay attention to the dog or person performing the modelled behavior; retain the information gathered about the behavior during the observation; be motivated to reproduce the behavior in a time and place removed from the original; and finally, produce the behavior, or some reasonable facsimile thereof.[53]
Motivational training has its roots in captive animal training, where compulsion and corrections are both difficult and dangerous, and ignoring bad behavior is not problematic as the animal lives under controlled conditions. As a dog training strategy, purely positive training is feasible, but difficult, as it requires time and patience to control the rewards the dog receives for behavior. Some activities such as jumping up or chasing squirrels are intrinsically rewarding, the activity is its own reward, and with some activities the environment may provide reinforcement such as when the response from dog next door encourages barking.[58]
Canine Lullabies even comes with a money-back guarantee if it doesn't calm your dog. If you want to see the magic in action, there's actually a video of this music calming down 50 shelter dogs in less than two minutes, so it might be worth a try. Overall, dealing with an anxious dog can be challenging, and it can cost you a lot of furniture. However, the sooner you identify the cause of Fido's anxiety, the sooner you can work up a treatment plan that will help you both feel better.
At a basic level, owners want dogs with which they can pleasantly share a house, a car, or a walk in the park. Some dogs need only a minimum amount of training to learn to eliminate outside (be housebroken), to sit, to lie down, or to come on command (obey a recall). Many other dogs prove more challenging. New dog owners might find training difficult and fail to make progress, because they expect dogs to think and act like humans, and are surprised and baffled when the dogs don't.
Sally eventually got the hang of it all and she is attached to me 24/7. I have a 4 month old son and if I go to his room to feed him she instantly follows. If I get up from the couch to use the bathroom, she follows. If I go to the bathroom to brush my teeth, she follows. She is almost always within 5 feet of me, so I know she is behaving and looking to me for direction.
Proper socialization entails exposing a pup to as many sounds, sights, people, places, animals, and locations. Some suggestions include; the park, pet store, school yard when children are playing, in the car, shopping malls, busy streets with garbage trucks, motorcycles, bicycles, and skateboards. Takes kibble everywhere you go and ask people to toss or hand feed a treat to your dog. Search out people who walk slowly or with a cane, in a wheelchair, strollers, men with hats on, large men, children of all ages. The more things your pup sees at an early age the easier it will be for them to adjust to new things as they grow up.
Puppy biting is normal and necessary. Puppies need to learn how to control the pressure of their bite. Allow the pup to bite your hands. When you feel pressure more than a light touch, squeal “Ouch!”, get up and walk into another room. This is how littermates play with each other. If one playmate bites too hard, the other yelps and walks away to lick its wounds. The biter learns to soften its mouth or risk losing its playmate. Loss of a playmate is more understandable to the pup than punishment.
Changing behavior takes time. You need to have realistic expectations about changing your dog’s behavior as well as how long it will take to change behaviors that you don’t like. Often behaviors which are “normal” doggie behaviors will take the most time such as barking, digging and jumping. You also need to consider how long your dog has rehearsed the behavior. For example, if you didn’t mind that your dog jumped up on people to say hi for the last seven years and now you decide that you don’t want him to do that anymore, that behavior will take a much longer time to undo than if you had addressed it when he was a pup. Remember it’s never too late to change the behavior some will just take longer than others.

Treats should be soft and bite-sized so your pooch will immediately be ready for more. Couple all rewards with verbal praise and your dog will soon form a positive association with the sound of your praise. Once a behavior is well established, you can slowly reduce the frequency of other rewards. In time, your dog will respond to your command simply for your praise (and the possibility of the occasional treat).

One possibility that sounds interesting is the “safe area” idea. If the forecast predicts thunderstorm, then we can try keeping our dog in a low-stimulus (no windows/few windows), sound proof area, before the storm begins and *before* our dog starts to panic or becomes overly anxious. We can try masking out the sounds from outside with calming music, or a calm t.v. channel. At the same time, we distract our dog by giving him something interesting to do that he loves, for example playing a game, chewing on his favorite chews, playing with his favorite interactive food toy, etc.
To start training your dog to “settle,” leash her up and take a seat. Step on the leash so your dog has only enough room to sit, stand, and turn around, but not stray from your side. Then, wait. Your dog may be excited at first, and try to jump up on your lap or run around the room. Let her figure out that she can’t go anywhere. Once she settles down on her own, say “yes!” and give her a treat.
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