Hello. I've found this article interesting for me.. maybe it will be interesting for someone of you, future dog lovers... 
Choice Of Dog’s Breed
For centuries, dogs were brooded specifically for certain purposes: ones as watchmen or shepherds, others for hunting, third, simply because they looked nice and were good companions. There were dogs of all shapes and sizes. Sort of basic features like barking, characteristic sleep pattern or communication methods, combine all the dogs, but the behavior of dogs of various breeds is different.
Just behavioral characteristics underlie the choice of dogs, although in different countries they have a slightly different requirements to dogs of the same breed evaluating their behavioral and physical qualities. This is due to different gene pools as well as special attention being paid to either features of breed in the selection.
Interestingly, the further behind the physical type of dog from the original wolfish type, the less remains typical signals (such as position of subordination), used by dogs in communicating with each other.
CORRESPONDENCE BETWEEN DOG’S OWNER AND ITS BREED
While selecting a dog appropriate for your lifestyle, it is necessary to take into account certain factors. Probably it is worth to pay attention on those features of breed, such as reactivity (speed and intensity of reaction in response to irritants), aggressiveness (hostile or destructive behavior), “puppyness” (playfulness and willingness to obey) and the hunting instinct (congenital craving for other living beings).
REACTIVITY. Dogs with high reactivity have a strong inclination to protect its territory. They can often bark, demand attention and require large and permanent physical loads and constant stimulation.
AGGRESSION. Dogs of aggressive breeds may be ideal watchmen or guards, but tend to dominate and not very suitable as a family, especially when their aggressive aim at people.
“PUPPYNES”. These dogs are often highly dependent on the owners and so they can not be left alone for a long time. Well-suited to life in the family.
HUNTING INSTINCT. Dogs with strongly developed hunting instinct will chase for small animals, including household, and they can bite to death them. In some cases, as mentioned above, this behavior can be directed to children.
