The gray wolf colonized North America with humans.
Gray wolf . It is the only species of Canis to have a range encompassing both the Old and New Worlds , and originated in Eurasia during the Pleistocene , colonizing North America on at least three separate occasions during the Rancholabrean . It has a long history of association with humans , having been despised and hunted in most pastoral communities because of its attacks on livestock , while conversely being respected in some agrarian and hunter-gatherer societies .