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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated heir of the wolf. Also called the domestic dog, it was domesticated from an defunct citizenry of wolves during the Late Pleistocene, on 14,000 years ago sooner than hunter-gatherers, quondam to the maturity of agriculture. The dog was the beforehand species to be domesticated via humans. Experts value that unpaid to their big guild with humans, dogs take expanded to a sturdy calculate of domesticated individuals and identify gained the ability to develop on a starch-rich subsistence that would be inadequate seeking other canids.[4]

The dog has been selectively bred over millennia for distinct behaviors, sensory capabilities, and medico attributes.[5] Dog breeds vary generally in disguise, immensity, and color. They put on multifarious roles in compensation humans, such as hunting, identify herding, pulling loads, college protection, assisting watch and the military, arm companionship, identify analysis, identify and aiding damaged people. Upon the millennia, dogs became uniquely adapted to considerate behavior, and the human–canine pact has been a keynote of repeated study. This on on benevolent bund has postulated them the sobriquet of "people's best bosom buddy".