They might. But it might depend on their behavior and personalities. It is better if there are two dogs with the opposite gender with different ages, such as, a male who is 6 years and a female who is 2 years old.
If they are raised around humans and other cats and dogs, German Shepherds can be very social.
Yes if they are properly socialized at a young age.
They can be.
There is no information on the actual cost of the Gosselin's German Shepherds. Those dogs were not German Shepherds but a mix so not much.
German Shepherds are a fantastic breed to have for protection, and they do quite well with other German Shepherds and different breeds as well. Most breeds of dogs can get along, the key is training. Poor training will produce poorly behaved dogs that do not get along and can be aggressive. Firm training will produce highly trained and sound of mind animals. I recommend German Shepherds, as an owner of 2, and a Mom of 2 little ones, I see how protective yet loving additions to the family they can make.
The breeds mean nothing. If they are all excellent, socialised dogs there will be no problem.
They mate as dogs do, just like any other breed of dog.
German shepherds are normally police dogs
That is not true. There is nothing stating that Jewish people will not own German Shepherds. As a matter of fact, many German Shepherd police dogs are trained in Israel and imported into other countries.
german shepherds and golden retrievers
They were bred from Shepherd dogs from Germany
German Shepherds are among the worlds smartest dogs (I have 1).