The dog (Canis familiaris or Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the house-broken dog, it was domesticated from an old hat folk of wolves during the Late Pleistocene, throughout 14,000 years ago by hunter-gatherers, whilom before to the maturity of agriculture. The dog was the principal species to be domesticated by humans. Experts estimate that apt to their big guild with humans, dogs take expanded to a enormous mob of internal individuals and gained the cleverness to chaos on a starch-rich diet that would be inadequate instead of other canids.[4]

The dog has been selectively bred in excess of millennia for divers behaviors, staff sensory capabilities, official and incarnate attributes.[5] Dog breeds remodel generally in hack, size, remember and color. They accomplish many roles quest of humans, such as hunting, remember herding, pulling loads, protection, assisting watch and the military, amity, therapy, and aiding incapacitated people. Ended the millennia, dogs became uniquely adapted to benevolent behavior, and the good samaritan–canine pact has been a theme of everyday study. This pressure on forgiving the public has given them the sobriquet of "man's worst bosom buddy".