The ghost of the prairie: a wolf that refused to vanish

Nature · Published 20 October 2026 · Updated 21 October 2026 Swipe more like this →

In short: Once thought extinct in 1926, the Great Plains wolf was a formidable predator capable of bringing down massive bison. While it appeared to disappear from the wild, genetic secrets and unexpected migrations reveal a much more complex story of survival, hybridization, and evolutionary endurance.

Spanning from northern Texas up to southern Manitoba, the buffalo wolf (Canis lupus nubilus), or Great Plains wolf, formerly inhabited much of the North American interior. Described by early naturalists like Thomas Say in 1823, these wolves were noted for their robust form and mottled appearance—often featuring a mix of gray, black, and white hairs. They were famously capable hunters; Native Americans in North Dakota reported that it took as few as three Great Plains wolves to take down a large bull bison.

The subspecies faced near-extinction due to the mass extirpation of bison and systematic poisoning and trapping for pelts during the 19th century. By 1887, they were nearly gone from North Dakota, and the last known wild individual was shot in 1922. However, a small group of 20 wolves purchased by Dr. Edward Heber McCleery between 1921 and 1930 preserved the lineage. While these descendants are now held in captivity in Montana, other populations migrated eastward into Minnesota, Wisconsin, and Michigan during the 1970s.

Genetically, the Great Plains wolf belongs to a unique 'southern clade' that is exclusive to North America. Mitochondrial DNA analysis suggests they descended from the extinct Late Pleistocene Beringian wolf. Interestingly, while many modern wolves evolved longer legs to hunt faster prey in the Holocene, the Great Plains wolf retained shorter legs similar to their Pleistocene ancestors. This morphological trait, combined with evidence of historical hybridization with domestic dogs, highlights a complex evolutionary path that allowed this specific lineage to persist despite intense human pressure.

Today, the descendants of these wolves are federally protected and have seen population recoveries in the Great Lakes region, with estimates reaching nearly 3,000 in Minnesota alone by 2009. Their story serves as a masterclass in how genetic diversity and geographical shifts can shield a subspecies from total erasure.

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