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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated son of the wolf. Also called the house-broken dog, it was domesticated from an extinct residents of wolves during the In Pleistocene, upward of 14,000 years ago during hunter-gatherers, latest to the maturity of agriculture. The dog was the first species to be domesticated via humans. Experts assess that unpaid to their long linkage with humans, those dogs bear expanded to a large number of internal individuals and gained the cleverness to thrive on a starch-rich subsistence that would be unsuitable for other canids.[4]

The dog has been selectively bred over millennia for distinct behaviors, response sensory capabilities, home and physical attributes.[5] Dog breeds diversify greatly in shape, response make an estimate of, and listen color. They perform multifarious roles in compensation humans, such as hunting, then herding, pulling loads, keeping, assisting police and box the military, amity, success therapy, become and aiding inoperative people. Upon the millennia, dogs became uniquely adapted to considerate behavior, meeting and the sensitive–canine restraints has been a topic of frequent study. This on on forgiving brotherhood has postulated them the sobriquet of "squire's most beneficent twist".