A reporter from ABC News interviewed me yesterday about the Dire Wolf, and her piece appears on their website today (see below). I had to find it myself because, as is usual, when I ask reporters to send me the link to a story for which I was interviewed, they all say “yes”, but only about 10% ever do. Frankly, I think it’s kind of selfish to exploit scientists for their expertise and not even send them a lousy link.
Well, I digress, but this is in line with the kind of science journalism that has often accompanied the Dire Wolf story. Fortunately, the ABC article is pretty good.
First I’ll add a few comments. My own view is that Colossal has behaved in a sleazy and overly secretive way with respect to their “de-extinction” and “we-are-big-conservationists” claims. Some of the secrecy seems unwarranted. For example, they told the New Yorker reporter who wrote about the “Dire Wolf” what genes they had edited, but did not permit him to publish their identity. Since the faux Dire Wolves are now romping around a secret pasture monitored by drones, there’s no chance that anybody else is going to do what Colossal did, so no need to hide the genes.
The paper about the “woolly mouse” is on bioRχiv, but is still not accepted for publication. (The accompanying note says “This article is a preprint and has not been certified by peer review.”)
And Colossal Bioscience is getting considerable flak from the better science journalists, and is getting peevish about it. They issued a press release yesterday that was defensive, clearly a response to the pushback they’re getting and heavily concerned with species definitions, trying to argue that the dire wolf is a “new species” even though it’s just a gray wolf with 20 DNA letters changed. Here’s short excerpt of the two-page release:
We invested over a year collaborating with academic colleagues to improve the dire wolf paleogenome and decode the dire wolf’s evolutionary history. Our scientific manuscript has been submitted for peer review and posted to the preprint server–please go check it out.
I cannot find the preprint of the Dire Wolf paper anywhere on the web. If you can find it, let us all know. It would of course list the genes that had been changed.
You can read the ABC article by clicking below; it’s free. The article includes a ten-minute video of the project showing the “Dire Wolves” (I have to admit that they’re cute). Note that Colossal decline to let the reporter see the faux Dire Wolves “up close,” though they showed her the videos. And Colossal co-founder Ben Lamm asserts that they are on target to produce woolly mammoths by 2028! I’m ready to bet a thousand dollars that that won’t happen—especially if you define “de-exincted woolly mammoth” as being something with at least 50 gene edits that’s ready to release on the tundra.
Three quotes from Beth Shapiro, the chief scientific officer of Colossal Biosciences, from the video in the article:
“. . . that animal looks like a dire wolf, it will behave like a dire wolf, and it is a dire wolf.”
“When I saw them born, and they were white, I was like: ‘we’ve done it–those are dire wolves.'”
“I think that the best definition of a species is if it looks like that species, if it is acting like that species, if it is filling the role of that species, then you’ve done it.”
They are heavily invested in the claim that this really IS a dire wolf. The press release makes that clear, as they’re trying to revise species definitions so that the Dire Wolf qualifies as a new species. From Colossal’s press release:
So many experts out there are demanding that species are defined solely by their DNA. That’s some version of “insane”. Even evolutionary biologists can’t agree on species definitions. Mammoth species? Defined by teeth ridges. Ancient bison? Horn shapes. And so arbitrarily that someone accidentally mixing up length and width measurements had zero impact on species classification. Brown bears and polar bears, humans and Neanderthals, wolves and coyotes are all different species unless you apply the most commonly taught species concept, which would classify them as the same species because they can interbreed and produce healthy, fertile offspring.
Getting dragged into arguments about species definitions is a distraction from the real achievement. This is the most significant advancement in gene-editing in history. Even our harshest critics admit it. As one of our founders stated, “this is the moon landing of synthetic biology.”
. . .We get it. We totally understand that some scientists are not comfortable calling these dire wolves because they feel like the wolves are not sufficiently genetically similar to a particular extinct individual to merit that name. That’s ok with us. This is not a fight that we care about. We’re calling them dire wolves, and if you prefer something else (how about “Colossal’s dire wolves”?) that works too. And maybe also take a breath and think about what the birth of these technologies means to the future of our planet instead of nitpicking terminology.
This is a fight they don’t care about? I think they should care, at least a bit. They are calling these tweaked canids members of a new species, the “Dire Wolf”. I prefer “gray wolves with fifteen DNA letters from dire wolves” or, better, “genetic variants of the gray wolf.” The whole hype around this animal is that it is a new species that existed in the past, not simply a minor variant of the gray wolf that is nowhere near being genetically similar to the extinct gray wolf.
Quotes from the ABC piece, including what I said:
Colossal Laboratories & Biosciences, the company behind the revived dire wolf and based in Dallas, said it is “a scientific breakthrough for global conservation efforts” and is even trying to bring back the extinct woolly mammoth by 2028.
However, bioethicists and ecologists say they are skeptical that the animals created are actually dire wolves and said there are ethical concerns including where the animals would be kept and if they could ever survive in the wild.
“All claims of de-extinction are the invocation of a metaphor, and what they have produced and what they will at some point produce, may be technologically impressive, but they are not and never can be the actual previously extinct creatures,” Samuel Gorovitz, professor of philosophy at Syracuse University and a leader in the development of the medical ethics field, told ABC News.
“Only adult dire wolves can raise a dire wolf and there aren’t any. … One thing that we know for sure, that they are not, is dire wolves.”
. . . Stuart Pimm, Doris Duke professor of conservation ecology at Duke University’s Nicholas School of the Environment, called the news of the resurrected dire wolf a “colossal fabrication” and referred to the species created as a “designer dog.”
“This is just a big dog with a few genes inserted from a once extinct wolf,” Pimm told ABC News. “Incidentally, a dire wolf is not really closely related to a regular wolf.”
He went on, “It’s about as different to a regular wolf as we are from chimpanzees and if you inserted a chimpanzee gene into a human, I think that will be a horribly unethical thing to do.”
One of my beefs is that none of Colossal’s projects involve changing the behavior of the “de-extincted” organism, even though behavior is absolutely critical not only in bringing back a species as it really was, but allowing it to survive in nature. Remember, wolves and mammoths are social animals, programmed to learn many things from their parents. And they have genetically coded behavioral repertoires whose genetic basis we do not understand. For example, maybe lichens tasted good to a Woolly Mammoth but wouldn’t to a replica tweaked by Colossal. Such a difference, if it existed, would likely be genetic.
A few more criticisms from the ABC piece:
However, today’s environment does not resemble the environment in which historic dire wolves lived and releasing them into the wild could harm the ecosystem.
“It has to live somewhere, and it isn’t clear what the environment was that the dire wolf lived in, or what it ate, or sort of its behavior, and so you kind of face a possibility you won’t know where to keep this animal that you made healthy,” Arthur Caplan, a professor of bioethics at the NYU Grossman School of Medicine, told ABC News.
He added that the behavior of dire wolves was likely shaped by the packs they roamed in or packs that they may have competed against. However, those groups also don’t exist anymore.
“If you bring back something that’s been dead 10,000 or 40,000 or 100,000 years, you need to bring back its environment, not just the animal,” Caplan continued. “Otherwise, you potentially are going to have issues.”
Jerry Coyne, professor emeritus in the department of ecology and evolution at the University of Chicago, said there is no way to release the “de-extincted” dire wolves back into the wild because they wouldn’t know how to survive.
Coyne told ABC News that if the revived dire wolves are let loose into the wild “without the social group that they’re evolved to be in” it would be hard to expect them to “behave properly” around other animals because they’ve never been exposed to other species.
“So that’s also unethical, because those animals are kind of separate. They’re not going to have the right thing to eat, it’s not going to know what to eat, how to eat, probably got the wrong digestive system. … So that’s one of the ethical considerations.”
Colossal Laboratories did not reply to ABC News’ request for comment on these concerns.
Of course they wouldn’t!
Again, I think there is a destructive and perhaps unwitting collusion between Colossal and much of the press. Now the ABC piece by Mary Kakatos is fine, and gives the proper caveats and room for critics, but a lot of pieces don’t (see the New Yorker piece, for instance). But the press isn’t going to get clicks by saying that “this is not a real Dire Wolf,” so they amp up the gee-whiz factor and dial down the critics. And, as you see above, Colossal is perfectly happy with the rah-rah press coverage. The real losers in all this are the public, who miss the chance to learn something about genetics and conservation.
And, by the way, Colossal should stop spreading the view that de-extinction is one way to keep us from worrying about endangered species, implying that we can always bring them back again with cloning, Crispr and surrogate mothers!
UPDATE: Beth Shapiro defends the criticisms leveled against the Dire Wolf project. Many of her points was in the press release. Click to hear (h/t Matthew Cobb). She is quite defensive.
An analysis of this statement followed by a thread. I can’t embed the Bluesky post, but click on it to go to the thread:



The CSO’s statements about the definition of a species are ridiculous. Sure, there may be grey areas and we all know there is a continuum between all living beings BUT this is about as black and white as it gets. It seems like a strategy to confuse laypeople with a fake controversy about species definitions. Reminds me of how some creationists exploit actual areas of scientific agreement about certain evolutionary mechanisms to claim any credible scientist doubts the core concept of evolution. Very disappointed to see a scientist make such arguments.
Many knock-on problems as the idiots in Washington see this “breakthrough” as obviating the need for the Endangered Species Act. Interior Secretary Bergum quoted in the Washington Post:
“It’s time to fundamentally change how we think about species conservation,” Burgum wrote in a post on X. “Going forward, we must celebrate removals from the endangered list — not additions.”
and
“If we’re going to be in anguish about losing a species, now we have an opportunity to bring them back,” he told Interior Department employees during a live-streamed town hall Wednesday. “Pick your favorite species and call up Colossal.”
My reply is: Great. By those lights we can add another endangered species on the list, and they are called Dire Wolves. n=3 is highly endangered.
Epic PCC(E) WEIT-kung-fu.
can’t help but put my IMHO :
Colossal Biosciences is practicing George Soros’ reflexive alchemy from his The Alchemy of Finance – Reading the Mind of the Market…. ca. 1980.
Quote (supposedly from AoF but I’m still waiting for a copy):
“Scientific method seeks to understand things as they are, while alchemy seeks to bring about a desired state of affairs. To put it another way, the primary objective of science is truth, – that of alchemy, operational success.”
… but I guess if their company makes organs for saving lives, that’s great?- I mean, what can I say…
Addendum :
I looked up the pig kidney posting on WEIT that suggested this notion – it was a Hili Dialogue.
The company is eGenesis and has some connection to George Church, so that’s how I connected the ideas. I guess nothing to do with Colossal‘s mission, but the technology itself – I don’t know.
https://whyevolutionistrue.com/2024/03/22/friday-hili-dialogue-466/
Whatever it is Colossal is doing, it’s not conservation. There are no Dire Wolves to conserve.
These hybrids are a human invention, not created by natural selection.
And scientific “definitions” like the IUCN de- extinction one are really opinions, not facts.
We are able to bring back dinosaurs, but not mammals? How disappointing! I kid.
I agree with your criticism that Colossal needs to stop downplaying endangered species as no big deal ‘cause Crispr! That does a disservice to conservation efforts. There really is no coming back from extinction and this fact should never be minimized.
And thanks for keeping us abreast of this muddled story.
I’m surprised to find that the Scientific American report from a few days ago is fairly critical of Colossal.
https://www.scientificamerican.com/article/the-dire-wolf-isnt-back-but-heres-what-de-extinction-tech-can-actually-do/
“‘This is a designer dog. This is a genetically modified gray wolf.’—Jacquelyn Gill, paleoecologist”
File under stopped clocks etc.
Isn’t it the case that each of us (and thus presumably other mammals including wolves) is born with about 50 novel mutations?
If so then the new pups are hardly any more different from other gray wolves than any other gray wolf is.
Well, I don’t think that is quite fair. Most of the fifty mutations you are talking about (actually the number seems to even higher) would probably be neutral and not expressed, and hence fairly irrelevant. The genes edited by Colossal would be expressed. That is quite different.
There are plenty of valid arguments against the pseudo-Dire Wolves, mentioned in the post.
What puzzles me is Colossal’s business plan: what future source of revenue does it
look forward to, which presumably persuaded its investors? Does it expect to receive de-extinction contracts from the Department of Interior, like SpaceX’s contracts with NASA? Will its dire wolves be retailed to pet stores? Does it plan to rent out its putative wooly mammoths for logging trees that don’t exist in the Arctic tundra?
They have a lot of $$ from investors or donators, and they are valued in the $billions if I recall (I don’t recall the specific figure, though). But I would expect that these generous sources didn’t expect anything back.
And to think what that could have done for providing actual benefits.
There’s a fairly long Wikipedia entry on Colossal, with lots of references.
All money raised is private. It doesn’t sell shares.
https://en.m.wikipedia.org/wiki/Colossal_Biosciences
Not a Dire Wolf.
And why is Colossal so insistent on muddying the waters regarding how species are defined? Because the only way that they can claim that their Gray Wolf variant is a Dire Wolf is to muddy the waters regarding what a species is. I don’t think that—with respect to mammals—the biological species concept is in doubt.
Not a Dire Wolf.
Not a Dire Wolf, but a dire transwolf. “Species” is just another social construct.
Oops, I forgot the smiley.
Good comparison! The insistence that these animals are dire wolves reminds me of “trans women are women.”
Of course Colossal pretends that the species question is a non issue. If they did care about this they would have to admit that their ‘Dire Wolf’ is no such thing.
It is an interesting question, though, at what point a genetically modified organism becomes a different species. Could we even call it a species? There are no populations of interbreeding organisms in this case, nor are these creatures (literally, creatures) part of a historical lineage. I would prefer to call them chimaeras.
It might have been Dr. Shapiro who was interviewed on NPR today. I did not catch the name. She said that the white hair is not from a Dire Wolf DNA sequence. It is based on a DNA sequence from white domestic dogs.
There is now a considerable build-up in the media against Colossals’ hype around mammoth DNA and Dire Wolves. Enough so that the click bait story is less and less about breathless claims of de-exinction and more about fakery. I think that is becoming the narrative.
So when they do announce a Dodo-whatever or a Thylacine-something, I suspect the press will be a lot less credulous.
The media response is interesting. The Colossal press release probably should have got a [shrug] from everyone because it isn’t what they claim it is. But I guess maybe because it’s George Church and Winterfell the media have to either love it as brilliant or denounce it as fakery.
Reminds me of “looks like a horse, sounds like a horse……it’s a zebra!” So easy to get a species (or a diagnosis) wrong.
“. . . that animal looks like a dire wolf………. if it is acting like that species……”
This seems to beg the creationists taunt: Were you there?
It is conceivable that real Dire Wolf DNA may someday be found. It is conceivable that real Dire Wolf DNA might somehow be use to produce real Dire Wolves. That has not been done so far.
The CBS report is notably uncritical. See CBS News (The dire wolf, which went extinct 12,500 years ago, revived by biotech company).
The dire wolf preprint by Colossal Biosciences is here.
https://www.biorxiv.org/content/10.1101/2025.04.09.647074v1.full.pdf
Surprisingly the preprint doesn’t even mention their GMO wolves. The preprint also doesn’t suggest that dire wolf is closer to grey wolves particularly (contrary to Colossal’s claims): “dire wolves had a mixture of ancestries from two distinct lineages, with one diverging prior to African jackals and another stemming before gray wolves and coyotes”.