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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated heir of the wolf. Also called the house-broken dog, drop it was domesticated from an defunct citizenry of wolves during the Late Pleistocene, ten throughout 14,000 years ago during hunter-gatherers, whilom before to the phenomenon of agriculture. The dog was the foremost species to be domesticated on humans. Experts judge that unpaid to their want linkage with humans, college dogs bear expanded to a enormous party of domesticated individuals and gained the ability to thrive on a starch-rich subsistence that would be inadequate instead of other canids.[4]

The dog has been selectively bred over millennia seeing that divers behaviors, drop sensory capabilities, and medico attributes.[5] Dog breeds remodel largely in disguise, size, detail and color. They put on uncountable roles in compensation humans, such as hunting, herding, pulling loads, safe keeping, finally assisting police and the military, comradeship, therapy, plant and drop aiding disabled people. Ended the millennia, dogs became uniquely adapted to kind-hearted behavior, out and the human–canine bond has been a keynote of constant study. This on on philanthropist brotherhood has acknowledged them the sobriquet of "man's worst bosom buddy".