Colossal unveils two 'de-extinct' dire wolf pups

Dire wolves return: Two pups spark debate over their true nature

Two puppies named Romulus and Remus, born on October 1, 2024, were unveiled by Colossal Biosciences as the first animals ever "de-extincted." The dire wolf had been extinct for more than 10,000 years. Initial reactions ranged from curiosity about roasted dodo meat to jokes about loincloth safaris. A second, more uncomfortable reaction questioned how much actual wolf DNA these animals contain versus marketing hype.

The technique, stripped of embellishment, involves extracting DNA from extinct remains, copying it via genetic editing, and implanting it into a living surrogate species. The result is a hybrid, not a clone. The core technical debate concerns what percentage of the genome belongs to the original dire wolf versus the modern gray wolf that provided the womb and missing DNA.

What exactly did they create?

According to one participant, the dire wolf is not a Canis lupus. It shares a distant ancestor with the gray wolf but is genetically closer to the jackal than to the common wolf. This suggests that what is presented as resurrection is practically a gray wolf with a handful of chimeric genes inserted. It is not a recovered subspecies, but a new organism built from fragments of another.

Some compare this to crossing wolf subspecies, which happens naturally—coyotes and wolves already produce fertile offspring in the United States—while others argue the genetic distance here is of a different order. The discrepancy is significant: if the donor genome dominates, the animal in the enclosure is merely an expensive gray wolf.

Why the mammoth remains the real test

The next declared target is the woolly mammoth, where a problem often omitted by propaganda arises. Relatively complete samples of mammoth nuclear DNA exist, but the mitochondrial DNA from the egg is missing, which can only be provided by a female of the same species. The best option is inserting the nucleus into an elephant egg and hoping the mitochondrial part works. It likely won't, as the species are too distinct.

Additionally, according to one participant, the mammoth survived in northern Russia until relatively recently and was not much larger than an adult elephant. It hasn't been cloned before because it wasn't profitable. No one wants a woolly elephant as a pet.

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The business behind resurrection

The question that orders everything else is who pays. Research into these techniques requires private capital, and those who fund it choose the species. The first zoo to exhibit a mammoth will profit handsomely. There is no ecological amendment on the horizon; there is ticket sales.

This doesn't invalidate the technical advance. With refined tools, the scenario emerging is one of resurrected bodies sold to the highest bidder. Moreover, releasing an animal extinct for 10,000 years into the wild and declaring it native has implications for farmers and wildlife managers that have not been publicly discussed.

The dodo and Tasmanian tiger: logical candidates

If viability rather than spectacle is the criterion, two names appear repeatedly. The dodo, because an egg is easier to manipulate than a mammalian uterus. And the Tasmanian tiger, whose DNA is sequenced and which could use smaller marsupials, like the Tasmanian devil, as surrogates.

The real bottleneck lies in the egg's mitochondrial DNA, which must come from the original species. Without it, everything else is an approximation. With it, the door truly opens.

Ultimately, the unsettling question isn't whether they can do it. It's whether the animal brought back is the one that went extinct, or the one they found convenient to manufacture.