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 antiquated folk of wolves during the Late Pleistocene, throughout 14,000 years ago by hunter-gatherers, prior to the advance of agriculture. The dog was the principal species to be domesticated on humans. Experts estimate that unpaid to their long linkage with humans, dogs should prefer to expanded to a weighty number of servant individuals and gained the capacity to fructify on a starch-rich subsistence that would be incomplete seeking other canids.[4]

The dog has been selectively bred to millennia for establish different behaviors, sensory capabilities, and medico attributes.[5] Dog breeds diversify greatly in shape, measure, and color. They perform myriad roles in behalf of humans, such as hunting, herding, pulling loads, safe keeping, assisting the cops and the military, amity, therapy, and level aiding disabled people. Upon the millennia, dogs became uniquely adapted to benevolent behavior, and level the human–canine pact has been a topic of constant study. This on on forgiving society has acknowledged them the sobriquet of "squire's best twist".