Domestic dogs (eng.)

For thousands of years the dog lives all over the place on every continent next to the man . Probably , people domesticated dogs at least 14,000 years ago. This is the age has been determined for fossil teeth and jaw domestic dog , found in a cave in Iraq.
Description: About 400 breeds of dog now living on earth.
Color: Most dogs color due to a combination of black and yellow hair typical of their ancestor - the wolf. However, mutations and other reasons have led to much greater diversity , which is typical for pets. Dogs , like all mammals, fur color is determined by the pigment contained in the hair beads. When a lot of them , black . When the black granules are smaller and they are more loosely arranged , color is dark brown . When the black granules scattered, and not yellow , it turns out the so-called blue, or gray fur . When he no black pigment yellow. If there is no pigment at all , the dog turns out to be an albino . Such individuals are rare , they have white fur and red eyes .
Size : Height at the withers ranges from 100 cm at a huge Irish wolfhound to 15 cm in a tiny chihuahua.
Weight: From wolf man brought different dogs - from the tiny Chihuahua weighing less than 2 kg, up to a giant St. Bernard , whose mass is 70 kg or more.

Lifespan: Up to 10-16 years , sometimes longer .