Direwolves reborn? Why Jon Snow’s ‘best friend’ isn’t really back from extinction |

InGame of Thrones, Jon Snow’s direwolf Ghost was more than a pet. He was the embodiment of loyalty, survival, and bone-crunching badassery. When Colossal Biosciences said they had brought back direwolves, people got excited. Ghost is back! The North remembers! Science wins!
Well… no.
What Colossal did was sort of like bringing back the direwolf — if you squint, hold your breath, and ignore a few million years of evolution. What they actually made is a slightly upgraded gray wolf that looks like a direwolf on Instagram. It’s basically a dog with a direwolf filter.

Let us explain how they did it, step-by-step:
Step 1: Steal from the Dead (aka Ancient DNA)
First, scientists dug up some old bones. Fossils, actually — real direwolf teeth and skulls buried in the earth for 13,000 to 72,000 years. These bones still had tiny fragments of DNA inside — think of DNA as the instruction manual for building a creature. Of course, ancient DNA is like a book that’s been through a shredder and then set on fire, but with a lot of tech and patience, scientists can piece together a decent draft.
This draft is the best guess we’ve got at the full direwolf genome. Not perfect. Not complete. But better than nothing.

Step 2: Find the Direwolf’s Modern Cousin

Now, scientists needed a living relative to use as a “template.” Enter the gray wolf — the closest living cousin to the direwolf. Not identical, not even particularly close, but they have similar enough DNA to start with. Like using your cousin’s photo to fake an old yearbook picture of your granddad.
So they lined up the direwolf DNA with the gray wolf DNA and looked for the differences. These differences are what made direwolves dire — traits like a bigger head, heavier jaws, thicker fur, and probably the attitude of someone who never lost a fight.

Step 3: CRISPR — The Magic Scissors

Now comes the fun part: gene editing. Scientists used a tool called CRISPR. Think of CRISPR as a pair of tiny molecular scissors with a GPS tracker. You tell it, “Go to this exact spot in the DNA and snip it,” and it does just that. Then you can insert new code — like copy-pasting text into a document.
In this case, they took gray wolf DNA and made about 20 edits across 14 genes. That’s it. Out of 20,000 genes, they changed 14. Just the bits they thought made a direwolf look the part — fur, bone structure, colour. The rest? Still gray wolf.
So imagine taking a regular wolf, bleaching its fur, giving it a bigger jaw, and calling it Ghost. Cosmetic changes. Nothing internal. If this was a car, they changed the hood ornament and gave it monster tires — but it still runs on the same engine.

Step 4: Cloning — Copy, Paste, Birth

Next, scientists took one of these edited gray wolf cells and cloned it. Cloning is just scientific copy-paste.
They grabbed an empty egg cell from a big dog (probably some unfortunate mutt from a rescue shelter), removed its own DNA, and inserted the edited DNA. Then they shocked it — literally — to kickstart it into thinking it’s a real embryo.
Now you’ve got a fertilised egg with direwolf-ish DNA inside. That egg was then implanted into a surrogate mom — in this case, a large domestic dog. So yes, the world’s first “resurrected” direwolves were born from dogs. Ghost was carried by a Labrador cousin. Science!

Step 5: Behold, the “Direwolves” Are Born

Two male pups were born in October 2024. A female pup followed in January 2025. And with that, Colossal declared: “The first de-extinct animals are here.”
And look — these puppies do look cool. Big heads, thick coats, intimidating eyes. But let’s be very clear:
They are not real direwolves.
They are about 99.9% gray wolf, with a few ancient genes sprinkled in like seasoning. They weren’t born from direwolf parents. They don’t have the same instincts. They don’t come with Ice Age firmware. They’re modern animals dressed up in prehistoric cosplay.
If a real direwolf were resurrected, it would have dozens — maybe hundreds — of gene-level changes we don’t even understand yet. Behavior, metabolism, immune system, digestion, brain development — none of that is in these pups. We only know what a few genes probably do. The rest is a mystery.
These pups are science’s best guess at what a direwolf might have looked like. That’s it. They are replicas, not originals. Fancy knockoffs. They’re not Aenocyon dirus. They’re Canis Cosplayus.

So, What Did Colossal Actually Do?
They:

To be fair — what they did is impressive. Groundbreaking, even. It’s a major step in the world of synthetic biology and de-extinction science. But it’s not bringing back Ghost. It’s not Jurassic Park.
It’s a gray wolf with direwolf makeup.
Final Thought: Just Because It Howls Like Ghost…
We all want to believe in magic — that science can bring back the creatures we’ve lost. And one day, maybe it will. But for now, this isn’t resurrection. It’s genetic performance art. A really impressive stunt. So when you see the headlines that “direwolves are back,” just remember: Ghost is still gone.
What we’ve got now is his lookalike in a very expensive costume. And you can’t CRISPR loyalty. You can’t clone myth. Some things, as the Starks say, should stay buried in the crypt.