The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it was domesticated from an antiquated citizenry of wolves during the Unpunctual Pleistocene, throughout 14,000 years ago on hunter-gatherers, prior might to the development of agriculture. The dog was the principal species to be domesticated via humans. Experts judge that due to their big linkage with humans, dogs have expanded to a enormous party of domesticated individuals and gained the aptitude to fructify on a starch-rich regime that would be unsuitable instead of other canids.[4]

The dog has been selectively bred in excess of millennia for various behaviors, sensory capabilities, and corporeal attributes.[5] Dog breeds fluctuate greatly in hack, make an estimate of, and color. They perform many roles in compensation humans, such as hunting, herding, pulling loads, safe keeping, assisting the cops and the military, companionship, therapy, TV and aiding inoperative people. Ended the millennia, dogs became uniquely adapted to considerate behavior, might and the human–canine fetters has been a keynote of constant study. This pressure on benevolent society has acknowledged them the sobriquet of "people's most beneficent bosom buddy".