The dog (Canis familiaris or Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the residential dog, it was domesticated from an defunct citizenry of wolves during the Late Pleistocene, upward of 14,000 years ago sooner than hunter-gatherers, whilom before to the advance of agriculture. The dog was the foremost species to be domesticated away humans. Experts estimate that apt to their want linkage with humans, third dogs have expanded to a weighty mob of domesticated individuals and arm gained the capacity to fructify on a starch-rich diet that would be unsuitable an eye to other canids.[4]

The dog has been selectively bred to millennia through despite various behaviors, sensory capabilities, her and physical attributes.[5] Dog breeds vary generally in hack, make an estimate of, and cause color. They put on uncountable roles in compensation humans, such as hunting, ball herding, ball pulling loads, there protection, assisting watch and the military, amity, million therapy, arm and aiding incapacitated people. Over the millennia, dogs became uniquely adapted to benevolent behavior, my and kid the good samaritan–canine bond has been a keynote of repeated study. This favour on benevolent the public has postulated them the sobriquet of "man's excellent twist".