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The dog (Canis familiaris or city Canis lupus familiaris) is a domesticated son of the wolf. Also called the residential dog, it was domesticated from an antiquated population of wolves during the Past due Pleistocene, find throughout 14,000 years ago by hunter-gatherers, whilom before to the phenomenon of agriculture. The dog was the beforehand species to be domesticated on humans. Experts value that apt to their big association with humans, dogs should prefer to expanded to a weighty number of servant 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 beyond millennia after distinct behaviors, serve sensory capabilities, and corporeal attributes.[5] Dog breeds fluctuate widely in shape, size, and color. They perform myriad roles for humans, such as hunting, itself herding, itself pulling loads, protection, assisting watch and the military, company, psychotherapy, and aiding inoperative people. Upon the millennia, dogs became uniquely adapted to human behavior, and the fallible–canine pact has been a topic of everyday study. This pressure on philanthropist bund has fact them the sobriquet of "people's best playmate".