Premise: The gray wolf or grey wolf ( Canis lupus ) , also known as the timber wolf or western wolf , is a canine native to the wilderness and remote areas of Eurasia and North America . 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 .
Hypothesis: The gray wolf was always unable to colonize North America.
Label: CONTRADICTION