Ratatoskr: The Gossiping Squirrel of Yggdrasil
Ratatoskr is the squirrel of Norse mythology who runs up and down the world tree Yggdrasil, carrying words between the unnamed eagle at the crown and the dragon Níðhöggr at the roots. Medieval sources mention him exactly twice, in Grímnismál 32 and Gylfaginning 16, and that is the entire surviving record.
Most figures in Norse mythology come with stories attached: feuds, journeys, a fate waiting at Ragnarök. Ratatoskr comes with two sentences. That has not stopped him from becoming one of the most beloved creatures in the whole mythology, or from starring in one of the biggest video games of the past decade. This post lays out exactly what the sources say, what his strange name might mean, and why a squirrel with no story keeps outrunning gods who have dozens.
Who Is Ratatoskr?
Ratatoskr is a squirrel who lives on Yggdrasil, the great ash tree at the center of the Norse cosmos. His one job, as far as anyone in the Middle Ages bothered to write down, is delivery. An eagle sits at the top of the tree. A dragon gnaws at the roots far below. Ratatoskr runs the trunk between them, ferrying words from one to the other.
And that is genuinely all we know. He has no parents, no origin story, no named enemies of his own, and no role at Ragnarök. No poem gives him a line of dialogue. No saga mentions him at all. If a website tells you what Ratatoskr wants, or how the gods feel about him, that is a modern guess dressed up as lore. The honest version is shorter and, we would argue, more interesting.
What Do the Sources Actually Say About Ratatoskr?
Two texts, two sentences. The older one is Grímnismál, a poem of the Poetic Edda in which Odin, in disguise, recites the layout of the cosmos. Stanza 32 gives us the squirrel's job description. In Henry Adams Bellows's translation: "Ratatosk is the squirrel who there shall run on the ash-tree Yggdrasil; from above the words of the eagle he bears, and tells them to Nithhogg beneath."
The second mention comes from Snorri Sturluson, writing his Prose Edda in Iceland around the 1220s. In Gylfaginning 16 he describes the tree's animal residents and says, in Arthur Gilchrist Brodeur's translation, that "the squirrel called Ratatöskr runs up and down the length of the Ash, bearing envious words between the eagle and Nídhöggr." Snorri knew Grímnismál and leaned on it heavily, so this is less a second witness than a second draft.
Notice what Snorri changed, though. In the poem, the traffic runs one way: the eagle's words go down. Snorri makes it a two-way route and adds a motive, calling the cargo öfundarorð, spiteful or envious words. The gossiping squirrel, the little slanderer keeping a feud alive, is really Snorri's reading. The older poem just describes a messenger.
What Does the Name Ratatoskr Mean?
The usual gloss is "drill-tooth" or "bore-tooth," and the case for it is charming. The second element, toskr, looks like a cousin of the English word "tusk," so, a tooth. The first element recalls Rati, the name of the auger Odin used to bore through a mountain to steal the mead of poetry, a tool mentioned in both Hávamál and Snorri's Skáldskaparmál. A "drill-tooth" is a fine name for a rodent that gnaws through anything.
Honesty requires the footnote, though: the etymology is disputed. The word toskr appears nowhere else in Old Norse, which makes scholars nervous. The nineteenth-century philologist Sophus Bugge argued the whole name was borrowed from Old English, essentially "rat-tusk." Neither theory has won. "Drill-tooth" is the popular working translation, not a settled fact, and we would rather tell you that than pretend.
Who Are Ratatoskr's Neighbors on the Tree?
Yggdrasil is a crowded address, and the squirrel makes more sense once you meet the rest of the tenants. At the top sits the eagle, wise according to Snorri, yet never given a name in either source. Between the eagle's eyes perches a hawk called Veðrfölnir, a detail Snorri includes without a word of explanation. Four stags bite the branches. And down among the roots coils Níðhöggr, the corpse-eating dragon who chews the tree from below.
Grímnismál 35 adds the bleak punchline: "Yggdrasil's ash great evil suffers, far more than men do know," as Bellows renders it, bitten above and rotting at the sides while the dragon gnaws beneath. The world tree is not a serene monument. It is under constant attack from its own residents, and Ratatoskr spends his days sprinting through the middle of that slow-motion siege with messages between two of the attackers.
Is Ratatoskr a Villain or a Joke?
The sources never judge him, so interpretation has to do the work, and it splits two ways. The dark reading takes Snorri's "envious words" seriously: Ratatoskr is discord in animal form, a gossip who keeps the eagle and the dragon hating each other and so adds his small share to the tree's suffering. Norse culture had a sharp word for insult and slander, níð, the same element that sits inside the name Níðhöggr, and it treated such speech as genuinely dangerous. Some scholars read the squirrel as a fable about that: malicious talk, running up and down, wearing the world out.
The light reading says he is comic relief. A squirrel is a naturally funny animal, all speed and self-importance, and the image of one solemnly relaying a cosmic eagle's insults to a cosmic dragon has an obvious wink in it. Medieval audiences could laugh too. Nothing in two sentences rules either reading out, and in our experience the character works best when you let him be both: a small joke with a sharp point about what gossip does.
Why Is a Two-Sentence Squirrel Famous Today?
Because the blank slate is the appeal. Modern writers get a vivid image, a great name, and almost no canon to contradict, which makes Ratatoskr irresistible to adapt. God of War (2018) turned him into a summonable spirit, and God of War Ragnarök (2022) promoted him to a full talking character who bickers his way through Yggdrasil, easily the version most people now picture. He scampers through comics, card games, and fantasy novels for the same reason.
There is a neat irony in that. A creature defined by carrying other beings' words has ended up carrying Norse mythology itself to new audiences. Two sentences from medieval Iceland, and the squirrel is still running.
Keep exploring: meet the rest of the menagerie in our guide to the creatures of Norse mythology, or browse Norse mythology-inspired jewelry for pieces drawn from the same old stories.
Ratatoskr: Frequently Asked Questions
What is Ratatoskr?
Ratatoskr is a squirrel in Norse mythology who lives on the world tree Yggdrasil. He runs up and down the trunk carrying words between the unnamed eagle at the top of the tree and the dragon Níðhöggr at its roots. Only two medieval texts mention him, both very briefly.
What does Ratatoskr do?
He delivers messages. The poem Grímnismál says he carries the eagle's words down to Níðhöggr; Snorri's Prose Edda makes it a two-way run and calls the cargo "envious words," spiteful gossip passed between the two enemies. No source records him doing anything else, and he has no known role at Ragnarök.
What does the name Ratatoskr mean?
Probably "drill-tooth": toskr resembles the English word "tusk," and Rati is the name of the auger Odin used to bore into a mountain for the mead of poetry. The etymology is disputed, though. Sophus Bugge argued the name was borrowed from Old English "rat-tusk," and no theory is universally accepted.
Is Ratatoskr evil?
The sources never say. Snorri's claim that he carries "envious words" has led some scholars to read him as a malicious gossip who keeps the eagle and Níðhöggr feuding, while others see a comic figure. He is a message-carrier, not a destroyer like Níðhöggr, so "mischievous" fits better than "evil."
Where is Ratatoskr mentioned in Norse sources?
In exactly two places: stanza 32 of the eddic poem Grímnismál, and chapter 16 of Gylfaginning in Snorri Sturluson's Prose Edda, written around the 1220s. Snorri drew on Grímnismál, so the two mentions are closely related. No saga, inscription, or other medieval text names him.
That is the whole squirrel: two sentences, one great name, and eight centuries of momentum. We think there is something honest about a creature whose entire myth fits in a toast.
Skål!