The dog (Canis familiarisor Can is lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it is derived from extinct Pleistocene wolves,and the modern wolf is the dog's nearest living relative.Dogs were the first species to be domesticated by hunter-gatherers over 15,000 years ago before the development of agriculture.Over the millennia, dogs became uniquely adapted to human behavior, and the human-canine bond has been a topic of frequent study. This influence on human society has given them the sobriquet of "man's best friend".
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