Barbara & Anne: Many thanks for your interest in this matter!
We have constructed a large pen (30X25) for our 2 GSDs' in the garage. That's where they are at night. Most of the time I am always at home, as I am retired and potter around in the garden and the house. I would say that Fritz displays this behviour only when he anticipates something:
when one of our human family members greets the GSD's in the morning
whenever we are about to go outside- be it for play, run, walk, or to let the GSD's relieve themselves.
when its feeding time
The only time Fritz is quiet, is when all humans are sitting down and are quiet as well. Heaven forbid that someone gets up or moves around; that is when Fritz immediately jumps up to make sure we know that the earth is round.
A short history:
We have two GSDs. One (Fritz) who is American and the other (Sari) who is German. Both are 2 years old, and arrived here at about the same time when they were 6 months old. Both were kept in dog crates to begin with. Whereas Sari remained calm, Fritz walked around the box in circles. After the two were house-trained I constructed a pen in the garage in order to provide them with more freedom.
As I mentioned in my initial post, both GSDs' receive more than adequate exercise. We feed them twice daily (mornings 66% and evenings 34%) with Orijen Dog Food (Adult, Fish & Regional Red alternately). Although Both GSDs' have a pedigree, we know little of Fritz's early history (first 6 months), as we got him from our veterinarian who informed us that he was the last of a litter from a breeder in Georgia, and that no one wanted him. He looked so sad and his behaviour then was so timid, that my wife insisted we take him home. Sari arrived a few days later from Germany and both dogs immediately fell in love with each other and are now inseperable. We still do not know which of the two is the dominant one, as they seem to share that distinction between themselves.
Anne, we have tried the following:
1. to corner Fritz at the first indication of him beginning to circle.
2. the "Sit, Lie, Stay, Heel, commands in German.
One more piece of information- Fritz will not easily relinquish anything that he has in his mouth; be it a ball, a tug, stick or other toy. It is as if he has moved to a different plane. His eyes glaze over and it is impossible to get the object out of his mouth without force or twisting his head to its snapping point. If he does let go he will immediately snap at it. I have lost the nail of my right big thumb in this manner. This was a year ago, and the nail is still trying to grow! On the other hand, I can (which I seldom do) take his food away while he is eating or even add some delicious tidbits with my hand to the bowl without him even growling. This also applies to Sari.
It is possible that most the information I have provided you with might be superfluous, but we are at our wits end. Should you have any further questions, please do not hesitate to ask!
Once again, a big "thank you" for your prompt replies!
AB