Premise: 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 . The gray wolf is typically an apex predator throughout its range , with only humans and tigers posing a serious threat to it .
Hypothesis: The gray wolf is a predator with a range encompassing both the Old and New Worlds.
Label: ENTAILMENT