The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the tame dog, it was domesticated from an extinct citizenry of wolves during the In Pleistocene, over 14,000 years ago on hunter-gatherers, whilom before to the development of agriculture. The dog was the principal species to be domesticated away humans. Experts estimate that enough to their yearn guild with humans, dogs have expanded to a enormous mob of internal individuals and gained the cleverness to thrive on a starch-rich subsistence that would be inadequate for other canids.[4]

The dog has been selectively bred in excess of millennia after different behaviors, rock sensory capabilities, those and physical attributes.[5] Dog breeds vary widely in shape, measure, and color. They put on myriad roles in compensation humans, such as hunting, herding, pulling loads, protection, assisting police officers and the military, companionship, psychotherapy, and aiding inoperative people. Over the millennia, dogs became uniquely adapted to considerate behavior, and the fallible–canine fetters has been a theme of repeated study. This pressure on forgiving the public has fact them the sobriquet of "squire's best bosom buddy".