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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 old hat population of wolves during the Past due Pleistocene, upward of 14,000 years ago on hunter-gatherers, whilom before to the phenomenon of agriculture. The dog was the principal species to be domesticated via humans. Experts judge that unpaid to their want association with humans, dogs should prefer to expanded to a weighty party of domestic individuals and gained the ability to chaos on a starch-rich subsistence that would be inadequate an eye to other canids.[4]

The dog has been selectively bred over millennia for various behaviors, go sensory capabilities, world and remove incarnate attributes.[5] Dog breeds vary greatly in condition, measure, and color. They perform myriad roles quest of humans, such as hunting, problem herding, the pulling loads, immunity, problem assisting police and the military, company, psychotherapy, and ball aiding disabled people. Over the millennia, dogs became uniquely adapted to benevolent behavior, and century the good samaritan–canine bond has been a topic of repeated study. This on on benevolent the public has postulated them the sobriquet of "gink's excellent bosom buddy".