Scientists Say Dire Wolves Weren’t Truly Revived From Extinction

WHO:

ScienceAlert - Marine biologist Andrew Davinack and biochemist Charlotte Daniels, from Wheaton College Massachusetts, published an argument challenging the use of “de-extinction” for certain biotechnology projects.

ScienceAlert - Colossal Biosciences genetically edited grey wolf cells to breed wolves with traits resembling dire wolves.

Phys.org - Scientists are studying whether biotechnology could bring extinct species back to life.

WHAT:

ScienceAlert - Davinack and Daniels call the mistaken identification of genetic resemblance as restoration of an extinct species “lineage-genome conflation.”

ScienceAlert - The researchers argue that extinction ends an evolutionary lineage, not merely the availability of its genetic information, and that a reconstructed genome is, at most, a partial snapshot of an individual organism.

ScienceAlert - Colossal’s engineered wolves had characteristics including larger bodies, bigger teeth and paler coats; the researchers say these were grey wolves with some dire wolf traits, not revived dire wolves.

ScienceAlert - The researchers distinguish among “lineage restoration, genetic recovery, phenotypic reconstruction, ecological substitution and restoration of historical communities,” saying each has different success criteria.

ScienceAlert - The researchers do not claim de-extinction is impossible. They say using preserved cells or embryos offers a stronger claim because it can provide greater “biological continuity.”

ScienceAlert - Scientists used cell preservation with the Pyrenean ibex; the animal did not survive.

Phys.org - Advances cited as prompting interest in de-extinction include ancient DNA sequencing, genome analysis and gene editing.

WHERE:

ScienceAlert - Davinack and Daniels are affiliated with Wheaton College Massachusetts.

ScienceAlert - Dire wolves lived in an environment different from the modern world, with distinct climate, food sources, predators and ecological connections.

WHEN:

ScienceAlert - The researchers’ argument was published in *Biology Letters*.

ScienceAlert - Dire wolves lived more than 10,000 years ago.

ScienceAlert - The Pyrenean ibex cell-preservation attempt took place in 2003.

ScienceAlert - Colossal’s dire-wolf-related work was described as occurring in 2025.

WHY:

ScienceAlert - The researchers say species are more than their DNA: they are historically continuous population-level lineages shaped by evolution and ecological interactions.

ScienceAlert - They argue that a small number of engineered animals cannot recreate the variation of a large population or restore the historical habitat and environmental connections of an extinct species.

ScienceAlert - They urge private companies and media outlets to use more precise terminology because “de-extinction” can misrepresent the science and make technological progress harder to evaluate.

HOW:

ScienceAlert - Colossal edited genes in grey wolf cells, then bred animals with selected dire-wolf-like traits.

Phys.org - Biotechnology approaches discussed include ancient DNA sequencing, genome analysis and gene editing.

ScienceAlert - The researchers describe species as lineages shaped by gene flow, mutation, genetic drift, selection, demographic history and ecological interaction.

(UPDATED November 11, 2026 20:07 UTC)

Researchers say engineered wolves resemble dire wolves, but cannot restore their extinct evolutionary lineage. Colossal edited grey wolf cells, producing animals with larger bodies, teeth, and paler coats. They urge more precise terminology, noting preserved cells may offer stronger biological continuity.