Scientists did not recreate an extinct dire wolf from an intact ancient genome. Colossal says it used ancient dire-wolf DNA to guide edits to living gray-wolf cells, then cloned the edited cells to produce Romulus, Remus, and Khaleesi. Colossal calls them dire wolves and describes the work as de-extinction; other accounts describe the animals more narrowly as gene-edited gray wolves with selected dire-wolf-like traits.
The answer at a glance
| Question | Answer |
|---|---|
| Are the animals real? | Yes. The three animals named in coverage are Romulus, Remus, and Khaleesi. |
| Were they cloned from ancient dire wolves? | No. Colossal says it edited gray-wolf cells and used cloning to produce them. |
| Did ancient dire-wolf DNA play a role? | Yes. Colossal says it used ancient DNA to identify genetic differences and guide selected edits; that is not the same as transferring an intact dire-wolf genome. |
| How many edits were made? | Colossal reports 20 genetic edits at 20 loci across 14 genes. That figure describes the reported method, not the animals’ species identity. |
| Have they restored a wild dire-wolf population or its ecological role? | No restoration has been reported. The animals are at a secure, undisclosed U.S. location, and no release or ecological restoration has occurred. |
What Colossal announced
Colossal announced that it had brought back dire wolves and calls Romulus, Remus, and Khaleesi dire wolves. The company’s account says the project combined analysis of ancient dire-wolf DNA, edits to gray-wolf cells, and cloning. Colossal’s terminology reflects its own broad interpretation of de-extinction; it should not be confused with proof that the extinct species was recreated.
UC Santa Cruz described Romulus and Remus as genetically modified gray wolves endowed with traits of the extinct dire wolf, emphasizing that they are not exact replicas. Colossal’s chief science officer, Beth Shapiro, later put the distinction plainly: “It’s not possible to bring something back that is identical to a species that used to be alive. Our animals are grey wolves with 20 edits that are cloned,” as quoted by Live Science.
How the animals were made
According to Colossal and the Associated Press, ancient DNA was used to identify relevant genetic differences, then researchers edited gray-wolf cells. The reported process used the edited genetic material with dog egg cells and transferred embryos to domestic-dog surrogate mothers.
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- Study ancient remains. The Associated Press reports that the team examined a 13,000-year-old tooth and a 72,000-year-old skull fragment. These are the reported ages of fossil material.
- Use ancient DNA as a reference. Colossal says analysis of dire-wolf DNA helped identify genetic differences that informed the edits.
- Edit gray-wolf cells. Colossal reports 20 edits at 20 loci across 14 genes. The count describes its reported procedure; it does not establish that the resulting animals are dire wolves.
- Use cloning and surrogates. The AP reports that the researchers transferred genetic material to dog egg cells and transferred embryos to domestic-dog surrogates.
- Produce the animals. The resulting animals are the three named in coverage: Romulus, Remus, and Khaleesi.
The key distinction is that ancient DNA informed selected changes, while the donor cells were from living gray wolves. This was not cloning from an intact ancient dire-wolf cell or genome.
What the genetic edits do—and do not—show
Colossal says the edits were intended to give the animals selected traits associated with dire wolves. The reported count is 20 edits across 14 genes. That figure does not mean that 20 complete genes were replaced, nor does it show that the animals have the full genetic, biological, or behavioral characteristics of the extinct species.
UC Santa Cruz’s account of the ancient-genome research also describes a complex dire-wolf ancestry pattern. In 2025, UC Santa Cruz reported that roughly two-thirds of the dire wolf genome seems to originate from an ancestor of wolves and coyotes, while the remaining third comes from an ancient lineage related to South American dogs. Those proportions describe inferred dire-wolf ancestry; they are not a measure of how similar Colossal’s animals are to dire wolves.
Why “brought back” is disputed
Colossal calls the animals dire wolves and describes the project as de-extinction, focusing on engineered traits and its own functional account of the term. UC Santa Cruz and Shapiro’s later clarification emphasize that the animals were made from gray-wolf cells and are not exact replicas of the extinct species.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsThe disagreement is not simply whether the animals are real or fake. They are living animals produced through cloning and genetic editing. The question is what “brought back” means: selected resemblance to an extinct animal, or recreation of that extinct species. The evidence in the dossier supports the former description, not an exact resurrection.
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The Associated Press quoted Vincent Lynch, a biologist at the University at Buffalo who was not involved in the research, criticizing the result as an effort to make something “look superficially like something else,” rather than fully revive an extinct species. This is Lynch’s criticism, not an uncontested scientific consensus. Readers should weigh it alongside Colossal’s claims and the academic descriptions of the animals.
What the animals’ status means for conservation
The Associated Press reports that the animals are at a secure, undisclosed location in the United States. No release or ecological restoration has occurred. Colossal connects the work to potential conservation applications, but the reviewed sources do not establish that these animals themselves have a direct conservation role or have restored the extinct dire wolf’s ecological function.
The AP also reports that Colossal announced cloned red wolves intended to contribute genetic diversity to a small captive breeding population. That is a separate conservation claim and should not be treated as evidence that the dire-wolf project restored an extinct species.
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| Broad claim | More precise description |
|---|---|
| Scientists brought back the dire wolf. | Colossal produced cloned gray wolves with genetic edits intended to give them selected dire-wolf-like traits. |
| The animals were made from ancient dire-wolf DNA. | Colossal says ancient DNA informed some edits; the reported donor cells came from living gray wolves. |
| Twenty edits prove they are dire wolves. | Colossal reports 20 edits at 20 loci across 14 genes. The count does not establish species identity. |
| The project restored the extinct species’ ecological role. | No release or ecological restoration has been reported. |
| The animals are either real dire wolves or fake. | They are real cloned, gene-edited animals; whether “dire wolf” is an appropriate label depends on how de-extinction is defined. |
Bottom line
Colossal produced three living animals using edited gray-wolf cells and cloning, with ancient dire-wolf DNA used to guide selected edits. The company calls them dire wolves and describes the work as de-extinction, while academic descriptions and Shapiro’s clarification identify them as gray wolves with edits, not exact replicas of the extinct species. They remain in captivity, and no ecological restoration has been demonstrated.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.FAQ
Were Romulus, Remus, and Khaleesi cloned from extinct dire wolves?
No. The reported donor cells came from living gray wolves. Colossal says ancient dire-wolf DNA helped guide some edits, but no intact ancient dire-wolf cell was used for cloning.
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How many genetic edits did Colossal make?
Colossal’s science page reports 20 edits at 20 loci across 14 genes. This is the company’s reported method, not evidence that the animals are taxonomically dire wolves.
Are the animals exact copies of dire wolves?
No. Shapiro described them as cloned gray wolves with 20 edits, and UC Santa Cruz characterized Romulus and Remus as genetically modified gray wolves with traits of the extinct dire wolf.
Have the animals restored dire wolves to the wild?
No. The Associated Press reports that they are at a secure, undisclosed location in the United States, and no release or ecological restoration has occurred.
What does the ancient-genome ancestry research say?
UC Santa Cruz reported in 2025 that roughly two-thirds of dire-wolf ancestry seems to come from an ancestor of wolves and coyotes, and the remaining third from an ancient lineage related to South American dogs. This concerns dire-wolf ancestry, not the percentage of dire-wolf ancestry in Colossal’s animals.
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