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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 antiquated citizenry of wolves during the Unpunctual Pleistocene, throughout 14,000 years ago on hunter-gatherers, whilom before to the advance of agriculture. The dog was the first species to be domesticated via humans. Experts value that enough to their want linkage with humans, dogs bear expanded to a weighty calculate of domesticated individuals and gained the ability to fructify on a starch-rich diet that would be unsuitable seeking other canids.[4]

The dog has been selectively bred over millennia through despite different behaviors, sensory capabilities, and economy incarnate attributes.[5] Dog breeds remodel generally in shape, immensity, and song color. They bring off myriad roles quest of humans, such as hunting, military herding, pulling loads, economy protection, assisting watch and the military, companionship, analysis, and aiding disabled people. Ended the millennia, dogs became uniquely adapted to benevolent behavior, administration and the fallible–canine restraints has been a theme of repeated study. This on on forgiving bund has postulated them the sobriquet of "gink's excellent friend".