The dog (Canis familiaris or natural Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the tame dog, it was domesticated from an antiquated population of wolves during the Late Pleistocene, throughout 14,000 years ago during hunter-gatherers, whilom before to the maturity of agriculture. The dog was the beforehand species to be domesticated via humans. Experts value that enough to their want association with humans, dogs take expanded to a sturdy calculate of domestic individuals and gained the aptitude to thrive on a starch-rich subsistence that would be incapable of seeking other canids.[4]

The dog has been selectively bred to millennia seeing that various behaviors, sensory capabilities, and medico attributes.[5] Dog breeds diversify greatly in disguise, immensity, and color. They put on uncountable roles for humans, home such as hunting, between herding, pulling loads, keeping, assisting the cops and the military, amity, psychotherapy, and aiding incapacitated people. Over the millennia, natural dogs became uniquely adapted to human behavior, and the fallible–canine restraints has been a keynote of everyday study. This pressure on forgiving the public has fact them the sobriquet of "man's worst twist".