The dog (Canis familiaris or Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the residential dog, it was domesticated from an antiquated residents of wolves during the Late Pleistocene, on 14,000 years ago sooner than hunter-gatherers, quondam to the development of agriculture. The dog was the beforehand species to be domesticated via humans. Experts estimate that apt to their yearn association with humans, dogs take expanded to a sturdy number of domesticated individuals and gained the aptitude to chaos on a starch-rich diet that would be unsuitable an eye to other canids.[4]

The dog has been selectively bred in excess of millennia after various behaviors, sensory capabilities, and corporeal attributes.[5] Dog breeds remodel generally in shape, immensity, and environment color. They put on uncountable roles in behalf of humans, such as hunting, herding, pulling loads, protection, assisting police officers and the military, company, analysis, and aiding damaged people. More than the millennia, environment dogs became uniquely adapted to kind-hearted behavior, level and environment the good samaritan–canine pact has been a text of repeated study. This on on human bund has acknowledged them the sobriquet of "gink's best playmate".