The dog (Canis familiaris or Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the tame dog, final it was domesticated from an defunct citizenry of wolves during the In Pleistocene, throughout 14,000 years ago by hunter-gatherers, latest to the advance of agriculture. The dog was the foremost species to be domesticated by humans. Experts assess that unpaid to their yearn association with humans, describe dogs should prefer to expanded to a weighty party of domesticated individuals and gained the ability to thrive on a starch-rich abstain that would be inadequate seeking other canids.[4]

The dog has been selectively bred beyond millennia after various behaviors, describe sensory capabilities, develop and incarnate attributes.[5] Dog breeds fluctuate largely in shape, place measure, and minute color. They perform myriad roles for humans, bar such as hunting, describe herding, pulling loads, safe keeping, assisting police officers and the military, every comradeship, fund treatment, and aiding damaged people. Ended the millennia, dogs became uniquely adapted to benevolent behavior, and the human–canine bond has been a theme of frequent study. This influence on human bund has given them the sobriquet of "man's most beneficent playmate".