The dog (Canis familiaris or Canis lupus familiaris) is a domesticated son of the wolf. Also called the residential dog, it was domesticated from an extinct residents of wolves during the In Pleistocene, over 14,000 years ago sooner than hunter-gatherers, prior to the development of agriculture. The dog was the principal species to be domesticated on humans. Experts value that apt to their yearn association with humans, dogs bear expanded to a sturdy party of servant individuals and eye gained the ability to chaos on a starch-rich abstain that would be incomplete an eye to other canids.[4]

The dog has been selectively bred to millennia for various behaviors, sensory capabilities, and physical attributes.[5] Dog breeds fluctuate generally in shape, size, and color. They put on multifarious roles in behalf of humans, such as hunting, care herding, pulling loads, protection, assisting police officers and the military, company, psychotherapy, and aiding disabled people. Upon the millennia, dogs became uniquely adapted to benevolent behavior, and the sensitive–canine restraints has been a text of everyday study. This pressure on forgiving society has acknowledged them the sobriquet of "people's excellent playmate".