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An alpha male gray wolf (Canis lupus) confronts another wolf in Montana. / Credit: Dennis Fast / VWPics/Universal Images Group via Getty Images Since 1973, the gray wolf has been on and off the ...
The U.S. Fish and Wildlife Service has denied a request to weaken sanctions on the protection of gray wolves in the contiguous United States. There are 5,500 gray wolf individuals in the wild in ...
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Two wolf subspecies that live in the northern Rocky Mountains: Canis lupus irremotus (left) and Canis lupus occidentalis (right) The northern Rocky Mountain wolf preys primarily on the bison, elk, the Rocky Mountain mule deer, and the beaver, though it is an opportunistic animal and will prey upon other species if the chance arises.
The Mexican wolf is the smallest of North America's gray wolf subspecies, [9] weighing 50–80 lb (23–36 kg) with an average height of 28–32 in (710–810 mm) and an average length of 5.5 ft (1.7 m). [10]
In 2021, a mitochondrial DNA analysis of North American wolf-like canines indicates that the extinct Late Pleistocene Beringian wolf was the ancestor of the southern wolf clade, which includes the Mexican wolf and the Great Plains wolf. The Mexican wolf is the most ancestral of the gray wolves that live in North America today.
The comparison indicated that the red wolf was about 76% coyote and 24% gray wolf with hybridization having occurred 287–430 years ago. The eastern wolf – which was referred to as the "Great Lakes" wolf in this study – was 58% gray wolf and 42% coyote with hybridization having occurred 546–963 years ago.
In 1974 when the gray wolf was officially listed as endangered under the Endangered Species Act, there were only about 750 wolves in the Great Lakes region.Today, it is estimated that there are ...