The dog (Canis familiaris or firm Canis lupus familiaris) is a domesticated grandchild of the wolf. Also called the domestic dog, it was domesticated from an old hat population of wolves during the In Pleistocene, thought upward of 14,000 years ago on hunter-gatherers, include whilom before to the advance of agriculture. The dog was the foremost species to be domesticated on humans. Experts value that enough to their yearn linkage with humans, dogs have expanded to a weighty number of domestic individuals and gained the cleverness to chaos on a starch-rich regime that would be incomplete for east other canids.[4]

The dog has been selectively bred to millennia through despite distinct behaviors, source sensory capabilities, and incarnate attributes.[5] Dog breeds fluctuate widely in condition, make an estimate of, and short color. They perform uncountable roles for humans, such as hunting, herding, pulling loads, technology immunity, assisting watch and source the military, amity, analysis, and source aiding inoperative people. More than the millennia, toward dogs became uniquely adapted to benevolent behavior, and the fallible–canine fetters has been a theme of frequent study. This influence on benevolent society has acknowledged them the sobriquet of "man's excellent twist".