Because of significant landscape conversion following European settlement, a natural southward expansion of native foxes may have coincided with habitat changes in the region caused by the presence of humans. Some scientists think they were native to the northern part of North America but were scarce or absent in most hardwood forests where gray foxes were abundant. It is unclear whether red foxes are native to North America. Pups have more predators, including great horned owls and possibly large hawks. Predators of both species include bobcats, coyotes, and golden eagles. The distribution of the gray fox spans most of the United States, excluding part of the northern Rocky Mountains. It is widely distributed throughout much of Canada and the United States, except for a few isolated areas. The red fox is the most common species of fox native to North America. They are similar in size and can sometimes be difficult to distinguish. Two species of fox occur in Alabama-the red fox ( Vulpes vulpes) and the gray fox ( Urocyon cinereoargenteus).
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