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Fact or Fiction: Are Mysterious Dire Wolves Real?

December 24, 2023
in Science
Fact or Fiction: Are Mysterious Dire Wolves Real?
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Anyone who’s watched or read Game of Thrones has likely heard of the near-mythical dire wolf, a massive and terrifying beast. But the real-life origins of dire wolves aren’t found in George R.R. Martin’s imagination.

The true story of the dire wolf is rooted not in fiction, but in the real prehistoric world. These animals were once very much alive and roamed the lands of ancient North and South America. Their fascinating history, studied through fossil remains and recent genetic research, reveals a complex and captivating creature that was a significant part of the Ice Age ecosystems.

What Is a Dire Wolf?

The dire wolf, scientifically known as Canis (Aenocyon) dirus, belongs to the family Canidae, which includes dogs, wolves, and foxes. The genus Canis encompasses various species including domestic dogs, gray wolves, and coyotes.

Are Dire Wolves Real?

Yes, dire wolves are real. Admittedly, the creatures have been a bit tricky to study; while there are plenty of fossilized remains at the La Brea Tar Pits in California, there’s hardly any genetic material. Tar, as it turns out, doesn’t preserve DNA well. 

Angela Perri, an assistant professor of anthropology at Texas A&M University, says the study of dire wolves became pretty low-hanging fruit after the show aired. “They’re kind of the iconic creature of the Ice Age Americas,” she says. “It was fascinating to me that a lot of people didn’t know dire wolves were a real animal.”

Scientists had assumed that dire wolves were close relatives — or even just a different morphotype — of today’s gray wolf, but nobody knew for sure without DNA evidence. 

Read More: Saber-Tooth Cats and Dire Wolves Had Joint Ailments During the Latter Years of the Ice Age

Dire Wolf Facts

The dire wolf captivates our imaginations with its intriguing history and characteristics. Here are key aspects of their size, diet, and hunting strategies to better understand these fascinating animals.

Dire Wolf Size: How Big Is a Dire Wolf?

Though the prefix dire often means terrible, dire wolves weren’t quite the monstrosities that their name implies. On average, they would have been comparable in size to large gray wolves, though there were some differences: more robust frames and jaws, and slightly smaller feet, Perri says.

Dire Wolf Height: How Tall Is a Dire Wolf?

On average, the dire wolf would have had a shoulder height of 38 inches and a body length of 69 inches. Evidence from the La Brea Tar Pits suggests the lineage was broken into two subspecies, one of which was slightly smaller. But its body size throughout the Pleistocene — a period spanning roughly 2.6 million to 11,700 years ago and defined by repeated glacial and interglacial periods — was largely stable.

Dire Wolf Diet: What Did the Dire Wolf Eat?

Much of their diet probably would’ve consisted of horses and camels, which evolved in North America before radiating elsewhere and eventually going extinct in their native land. Perri adds that, because many dire wolf fossils are found with broken teeth, it’s believed that the animals relied on scavenging more than their distant gray wolf cousins.

Dire Wolf Behavior: How Did the Dire Wolf Hunt?

Morphological evidence suggests they hunted similarly to wolves, when necessary, though dire wolves may have had to hold on longer to their struggling prey. They also had a distinct preference for warmer, wetter climates (at least by Ice Age standards) and rarely ventured north of 42 degrees North latitude.

Dire Wolf Habitat: Where Did the Dire Wolf Live?

Dire wolves were especially common in areas that are now part of the U.S. The La Brea Tar Pits in present-day California, for instance, are one of the most famous sites for dire wolf fossils, indicating that they were abundant in this region.

Read More: No Snoots Here: Dogs and Wolves Can Find Hidden Food Without Relying Only On Their Noses

Analyzing DNA From Dire Wolf Fossils

Whether it was coincidence or not, in the years following Game of Thrones’ popularity, teams of researchers around the world began working on the dire wolf DNA problem independently. Perri, who had long studied human-canid interactions and canid evolution, found she wasn’t the only one interested in finding an answer.

Only after stumbling upon each other by accident did they all pool their efforts into one large study, published in Nature last year. What they found was largely unexpected.

Dire Wolf vs. Wolf

As it turns out, dire wolves aren’t subspecies of gray wolves — or even close relatives, for that matter. In fact, Perri says, their closest living relatives are the African jackals. According to the genetic evidence she and her colleagues uncovered, the dire wolves and gray wolves parted evolutionary ways roughly 5.7 million years ago. “Now we know they are just an insane example of convergent evolution,” Perri says.

Read More: Why Do So Many Humans Hate Wolves?

When Did the Dire Wolf Go Extinct?

The dire wolf, which went extinct around 10,000 years ago, had a unique evolutionary journey marked by its solitary presence in the Americas. Before the arrival of humans, wolves, and dogs, Perri explains, their only competition was probably from the saber-toothed cats. 

Why Did the Dire Wolf Go Extinct?

The Dire Wolf had a sturdier skeleton compared to the Gray Wolf, indicating it was built more for strength than speed. Its main prey were slow-moving herbivores, which couldn’t run quickly to avoid being caught. When these slow prey died out, scientists believe the Dire Wolf struggled to catch faster animals

Their struggle to adapt later on was probably a factor in their extinction, Perri suggests: “They were hanging out by themselves for a very long time, and specialized in the way they do things,” she says. “And then modern humans come in and they can do it all.

Read More: 5 Dog Breeds That Eventually Went Extinct

Redrawing the Family Tree

The study Perri participated in opens up whole new avenues of investigation into the life and evolution of the dire wolf. For one thing, the relationship between other prehistoric canids and later canids is suddenly being called into question. Armbruster’s wolf and Edward’s wolf, for example, were long thought to be common ancestors of dire and gray wolves, and a coyote ancestor.

“But given what we found, that’s probably not possible,” Perri says.

Though the new findings do help us to make sense of another, previous discovery: that there is no dire wolf DNA in any modern canids. This was a bit puzzling because canids love to interbreed, Perri says: “The fact that we have absolutely no genetic evidence that occurred most likely means that they were evolutionarily isolated.”

For a study that was (at least in part) kicked off thanks to a popular TV show, it has had remarkably profound implications. “We thought this would be a pretty simple look at this relative of the gray wolf, but now we’ve opened up this whole new door,” Perri says. “We have this whole new genus that may have covered the whole of the Americas, so that’s pretty exciting.”

Read More: Why There’s the Leader of the Wolf Pack

This article was originally published on Dec. 14, 2022 and has since been updated by the Discover staff.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Discover Magazine – https://www.discovermagazine.com/planet-earth/the-mysterious-origin-of-the-real-life-dire-wolf

Tags: FictionMysteriousscience
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