There are different information about when it was domesticated dog, 15 or 20 thousand years ago, however, despite the controversy, experts agree the opinion that the first domesticated animal was the dog.

All domestic dogs are part of the same family, Canis Familiaris. What needs a man who tamed a bold and strong animal? He needs an ally, guard of house, cattle. Probably, a guard – the first and oldest “profession” of dog.

There is evidence that in the army of Assyria and Babylon, as well as Alexander the Great, were “dogs-warriors.” Scary dogs did not know pity and fear, and the outcome of the battle often depended on the success of their activities.

In those ancient times were very popular dog fighting. Specially grown fighting dogs fought each other in the arena of the circus. Nowadays, in circuses, you also can see the dogs, but their role is quite different: as the most real artists, they, along with the clowns play scenes and mini-performances. How many memorable images of true and loyal friends the dogs have created in movies!

A lot of dogs around the world serve in law enforcement. From dog, working in the police, is required to be intelligent, attentive and in any case not cruel, and at the same time, if necessary, it should be able by the command of instructor to hold the offender. Bloodhounds are specially trained to detect certain odors. Dogs are often used in the fight against drug trafficking. Dog flair can detect drugs hidden even in thick-walled metal box. Experts say that the dog is able to distinguish more than 2,500 fragrances!

As a guide dog for blind people, the dogs have been used for hundreds of years. Also, in a number of countries is conducted training of dogs therapists for children with special needs and for people with problems of the musculoskeletal system.

There are more than 400 breeds of dogs in the world. And there is no “best” or “worst”. Each breed has its needs and specifics.