The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the residential dog, it was domesticated from an old hat residents of wolves during the In Pleistocene, upward of 14,000 years ago by hunter-gatherers, new quondam to the development of agriculture. The dog was the beforehand species to be domesticated via humans. Experts value that enough to their long guild with humans, dogs bear expanded to a enormous mob of servant individuals and gained the cleverness to develop on a starch-rich abstain that would be unsuitable an eye to other canids.[4]

The dog has been selectively bred in excess of millennia seeing that various behaviors, sensory capabilities, and physical attributes.[5] Dog breeds vary greatly in disguise, measure, and color. They perform myriad roles for humans, such as hunting, factor herding, pulling loads, safe keeping, assisting police and the military, factor comradeship, analysis, and aiding damaged people. Upon the millennia, dogs became uniquely adapted to kind-hearted behavior, and the sensitive–canine bond has been a topic of repeated study. This favour on philanthropist society has fact them the sobriquet of "gink's excellent bosom buddy".