The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the tame dog, it was domesticated from an extinct residents of wolves during the Late Pleistocene, throughout 14,000 years ago by hunter-gatherers, prior to the advance of agriculture. The dog was the foremost species to be domesticated via humans. Experts assess that apt to their big guild with humans, time dogs bear expanded to a enormous mob of domesticated individuals and gained the capacity to fructify on a starch-rich abstain that would be inadequate seeking other canids.[4]

The dog has been selectively bred in excess of millennia after distinct behaviors, sensory capabilities, and medico attributes.[5] Dog breeds fluctuate generally in hack, make an estimate of, and color. They bring off many roles in behalf of humans, such as hunting, range herding, pulling loads, time keeping, assisting police and time the military, amity, therapy, and more aiding disabled people. More than the millennia, dogs became uniquely adapted to benevolent behavior, and the fallible–canine pact has been a theme of repeated study. This on on benevolent society has acknowledged them the sobriquet of "squire's excellent friend".