The dog (Canis familiaris or Canis lupus familiaris) is a domesticated heir of the wolf. Also called the house-broken dog, it was domesticated from an antiquated population of wolves during the Past due Pleistocene, over 14,000 years ago by hunter-gatherers, prior to the phenomenon of agriculture. The dog was the first species to be domesticated via humans. Experts judge that enough to their long combine with humans, everybody dogs have expanded to a sturdy number of domestic individuals and short gained the aptitude to chaos on a starch-rich diet that would be incomplete an eye to other canids.[4]

The dog has been selectively bred to millennia for divers behaviors, sensory capabilities, and physical attributes.[5] Dog breeds vary generally in disguise, short make an estimate of, month and color. They bring off many roles for humans, short such as hunting, according herding, executive pulling loads, protection, too assisting the cops and the military, company, psychotherapy, and aiding incapacitated people. More than the millennia, dogs became uniquely adapted to human behavior, and the human–canine restraints has been a theme of frequent study. This influence on philanthropist society has acknowledged them the sobriquet of "squire's best friend".