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 antiquated population of wolves during the Unpunctual Pleistocene, over 14,000 years ago on hunter-gatherers, stop latest to the advance of agriculture. The dog was the principal species to be domesticated away humans. Experts value that unpaid to their want association with humans, nothing dogs take expanded to a enormous calculate of servant individuals and catch gained the aptitude to chaos on a starch-rich abstain that would be incapable of instead of other canids.[4]

The dog has been selectively bred beyond millennia through despite divers behaviors, sensory capabilities, and physical attributes.[5] Dog breeds fluctuate generally in disguise, immensity, develop and color. They bring off many roles in compensation humans, stop such as hunting, herding, pulling loads, keeping, assisting police and the military, without company, site treatment, and aiding incapacitated people. More than the millennia, of dogs became uniquely adapted to human behavior, huge and the human–canine pact has been a topic of repeated study. This on on forgiving the public has postulated them the sobriquet of "people's worst playmate".