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The dog (Canis familiaris or interest Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the residential dog, it was domesticated from an antiquated citizenry of wolves during the Past due Pleistocene, interest over 14,000 years ago on hunter-gatherers, quondam to the maturity of agriculture. The dog was the beforehand species to be domesticated by humans. Experts value that due to their want linkage with humans, dogs have expanded to a weighty party of domestic individuals and gained the capacity to chaos on a starch-rich diet that would be inadequate an eye to other canids.[4]

The dog has been selectively bred to millennia seeing that divers behaviors, sensory capabilities, and incarnate attributes.[5] Dog breeds remodel generally in disguise, immensity, and interest color. They bring off myriad roles for humans, such as hunting, herding, pulling loads, range immunity, assisting the cops and the military, amity, interest therapy, and aiding disabled people. Ended the millennia, dogs became uniquely adapted to human behavior, and the human–canine bond has been a topic of frequent study. This on on benevolent bund has fact them the sobriquet of "man's worst twist".