The diversity of dog breeds increased in direct proportion to the jobs they needed to fill and the geographic conditions they were required to live in. Dogs not only came to be changed in terms of behavior patterns but underwent drastic transformations in their physical appearances as well.
With time, varied species of dogs were trained to pull carts and sleds, retrieve nets from the sea (the Retrievers), rescue people lost in snowdrifts (St.Bernards), guard man and property, assist policemen in sniffing out crimes, dig, to become fancy companions for ladies (e.g. Poodles) and fun playmates for children (e.g. Dachshund).
While weak dogs gradually became extinct, the survivors interbred, producing new breeds. These breeds were then classified into various Dog Groups. Those popularly known are given below:
Sporting Dog Group
(developed to aid hunters by finding, flushing out and retrieving game)
Working Dog Group
(which includes most of the guard dog breeds)
Toy Dog Group
(most of the very small and miniature dog breeds including the lap dog and apartment-sized companion dogs are in this group)
(this group includes those small but lively terrier breeds that were developed, mainly in Great Britain, to hunt small animals)
(these breeds were developed to follow game either by sight or by smell)
Herding Dog Group
(the dog breeds in this group were developed to herd and control cattle and sheep and are therefore very energetic and intelligent)
Non-Sporting Dog Group
(when a dog breed doesn’t seem to fit well in any other group, it becomes part of this group)
Find More on Dog Breed Groups
We continue to experiment with various breeds of dogs–clipping their nails, shaving their hair, cutting off their ears or tails to interfere with nature in order to serve our purpose.