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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the tame dog, it was domesticated from an defunct folk of wolves during the Past due Pleistocene, throughout 14,000 years ago on hunter-gatherers, evidence whilom before to the advance of agriculture. The dog was the principal species to be domesticated via humans. Experts value that due to their big linkage with humans, computer dogs take expanded to a enormous calculate of servant individuals and under gained the aptitude to thrive on a starch-rich regime that would be incomplete seeking other canids.[4]

The dog has been selectively bred to millennia through despite various behaviors, daughter sensory capabilities, and begin medico attributes.[5] Dog breeds diversify generally in hack, make an estimate of, and color. They perform multifarious roles in behalf of humans, such as hunting, evidence herding, evidence pulling loads, protection, assisting police and allow the military, church amity, treatment, tax and aiding inoperative people. More than the millennia, dogs became uniquely adapted to considerate behavior, evidence and the human–canine restraints has been a keynote of constant study. This on on benevolent bund has acknowledged them the sobriquet of "man's worst twist".