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Largest Wolves in the World. The gray wolf: a beautiful species that was almost hunted to extinction. NA/AbleStock.com/Getty Images. When people think of wolves, one species usually comes to mind: the gray wolf. The gray wolf is the largest wolf and the basis of legends. According to National Geographic, the breed was almost hunted to extinction in the lower 48 states of the United States. Even now, few exist outside Alaska.
What do they look like? Gray wolves are the largest wild dog species in the world. They vary in size depending on where they are found, with southern populations being generally smaller than northern populations. Total body length, from tip of the nose to tip of the tail, is from 870 to 1,300 mm.