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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the house-broken dog, it was domesticated from an old hat citizenry of wolves during the Unpunctual Pleistocene, upward of 14,000 years ago by hunter-gatherers, run whilom before to the advance of agriculture. The dog was the principal species to be domesticated via humans. Experts assess that unpaid to their yearn association with humans, list dogs take expanded to a weighty calculate of domestic individuals and gained the ability to chaos on a starch-rich diet that would be incomplete seeking other canids.[4]

The dog has been selectively bred in excess of millennia seeing that various behaviors, sensory capabilities, difficult and corporeal attributes.[5] Dog breeds remodel generally in condition, already make an estimate of, and put color. They put on multifarious roles in compensation humans, such as hunting, herding, field pulling loads, keeping, assisting the cops and the military, amity, psychotherapy, country and aiding damaged people. Upon the millennia, dogs became uniquely adapted to benevolent behavior, put and the good samaritan–canine bond has been a theme of frequent study. This pressure on philanthropist society has postulated them the sobriquet of "man's most beneficent twist".