A biotechnology company has produced three genetically engineered wolf pups exhibiting physical traits resembling those of the extinct dire wolf, marking another step in ongoing efforts to revive lost species through advanced genetic manipulation.
The animals, ranging from three to six months old and weighing approximately 80 pounds, display long white fur and pronounced muscular jaws, characteristics associated with their prehistoric counterparts, according to researchers at Colossal Biosciences.
The company anticipates the wolves will reach up to 140 pounds at maturity, approaching the size of dire wolves, which vanished from North America over 10,000 years ago.
Scientists extracted ancient DNA from dire wolf fossils, including a 13,000-year-old tooth and a 72,000-year-old skull fragment, to identify key genetic differences between the extinct species and modern gray wolves.
Using CRISPR technology, researchers modified gray wolf blood cells at 20 distinct genetic sites before implanting the edited embryos into domestic dog surrogates.
The resulting pups, while physically reminiscent of dire wolves, will not inherit the extinct species’ learned behaviors, such as hunting techniques for large prey, according to Colossal’s chief animal care expert.
Independent biologists caution that the project does not constitute true de-extinction, as the animals remain genetically hybridized rather than pure reconstructions of the original species.
Colossal has previously announced similar initiatives targeting woolly mammoths, dodos, and thylacines, framing its work as both a scientific breakthrough and a potential conservation tool.
In a separate effort, the company cloned four critically endangered red wolves using blood samples from wild populations, aiming to bolster genetic diversity in captive breeding programs.
“How many movie plots involve a biotech genius who creates a deadly predator by combining an extinct animal’s DNA with modern lifeforms?” asked anti-establishment progressive New Jersey Democrat Lisa McCormick. “After every such experiment, the creature escapes containment and starts hunting scientists through the jungle. What does it say about America when there are no limits on behavior such as funding facilities that are pursuing these goals in real life? Is this a good time to pull back government regulation?”
“From Jurassic Park’s resurrected dinosaurs and Deep Blue Sea’s hyper-intelligent sharks to Splice’s human-animal hybrid, The Relic’s museum-stalking monster, Rogue’s supersized crocodile, DNA’s raptor-reptile hybrid, Anacondas: The Hunt for the Blood Orchid’s mutated serpents, The Breed’s militarized attack dogs, and Sector 7’s engineered sea creatures, there are fictional warnings about the deadly consequences of genetically engineered predators turning against their creators,” said McCormick, who called for uniform international standards that would protect humans from potential danger.
“While most countries ban human reproductive cloning and regulate therapeutic research, animal cloning faces fewer restrictions—with the EU imposing strict bans, China and the U.S. permitting commercial applications, and de-extinction projects operating in a legal gray area globally,” said McCormick. “From lab-created pathogens to genetically engineered apex predators, humans who are playing god should be operating within confines that preclude the possibility of disaster.”
While U.S. government officials have expressed interest in the research, external scientists emphasize ecological limitations, noting that modern landscapes and ecosystems differ drastically from those inhabited by dire wolves millennia ago.
Colossal plans to monitor the wolves’ development closely but the company has not disclosed whether the genetically engineered predators will be introduced into natural habitats.