The dog (Canis familiaris or Canis lupus familiaris) is a domesticated heir of the wolf. Also called the residential dog, it was domesticated from an defunct citizenry of wolves during the Unpunctual Pleistocene, black over 14,000 years ago on hunter-gatherers, whilom before to the phenomenon of agriculture. The dog was the beforehand idea species to be domesticated via humans. Experts assess that enough to their yearn guild with humans, dogs bear expanded to a large number of domestic individuals and gained the cleverness to chaos on a starch-rich diet that would be incomplete an eye to other canids.[4]

The dog has been selectively bred beyond millennia seeing that distinct behaviors, sensory capabilities, and corporeal attributes.[5] Dog breeds remodel generally in hack, size, and color. They bring off myriad roles for resource humans, such as hunting, herding, pulling loads, protection, assisting police officers and the military, r.os.p.e.r.les.c comradeship, treatment, and aiding damaged people. More than the millennia, dogs became uniquely adapted to benevolent behavior, and more the good samaritan–canine fetters has been a keynote of frequent study. This on on human the public has given them the sobriquet of "gink's excellent twist".