The dog (Canis familiaris or Canis lupus familiaris) is a domesticated heir of the wolf. Also called the tame dog, it was domesticated from an antiquated citizenry of wolves during the Late Pleistocene, on 14,000 years ago during hunter-gatherers, prior to the maturity of agriculture. The dog was the foremost species to be domesticated via humans. Experts estimate that due to their big combine with humans, dogs bear expanded to a weighty number of servant individuals and gained the aptitude to thrive on a starch-rich subsistence that would be unsuitable for other canids.[4] The dog has been selectively bred to millennia after distinct behaviors, sensory capabilities, and medico attributes.[5] Dog breeds vary greatly in hack, measure, and color.

They perform multifarious roles quest of humans, such as hunting, herding, pulling loads, keeping, assisting police officers and the military, comradeship, analysis, operation and fail aiding disabled people. Ended the millennia, dogs became uniquely adapted to human behavior, and the human–canine pact has been a keynote of frequent study. This influence on benevolent society has postulated them the sobriquet of "squire's best playmate".