In Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

, Ratatoskr (Old Norse

Old Norse

Old Norse is a North Germanic language that was spoken by inhabitants of Scandinavia and inhabitants of their overseas settlements during the Viking Age, until about 1300....

, generally considered "drill-tooth" or "bore-tooth") is a squirrel

Squirrel

Squirrels belong to a large family of small or medium-sized rodents called the Sciuridae. The family includes tree squirrels, ground squirrels, chipmunks, marmots , flying squirrels, and prairie dogs. Squirrels are indigenous to the Americas, Eurasia, and Africa and have been introduced to Australia...

 who runs up and down the world tree

World tree

The world tree is a motif present in several religions and mythologies, particularly Indo-European religions, Siberian religions, and Native American religions. The world tree is represented as a colossal tree which supports the heavens, thereby connecting the heavens, the earth, and, through its...

 Yggdrasil

Yggdrasil

In Norse mythology, Yggdrasil is an immense tree that is central in Norse cosmology. It was said to be the world tree around which the nine worlds existed...

 to carry messages between the unnamed eagle, perched atop Yggdrasil, and the wyrm

Wyrm

Wyrm , or wurm, is the Old English term for a dragon or a dragon-like creature, especially one that is serpentine. It is used as an archaism in English folklore and modern fantasy to distinguish it from its Modern English counterpart worm...

 Níðhöggr

Níðhöggr

In Norse mythology, Níðhöggr is a dragon who gnaws at a root of the World Tree, Yggdrasill.-Prose Edda:...

, who dwells beneath one of the three roots of the tree. Ratatoskr is attested in the Poetic Edda

Poetic Edda

The Poetic Edda is a collection of Old Norse poems primarily preserved in the Icelandic mediaeval manuscript Codex Regius. Along with Snorri Sturluson's Prose Edda, the Poetic Edda is the most important extant source on Norse mythology and Germanic heroic legends, and from the early 19th century...

, compiled in the 13th century from earlier traditional sources, and the Prose Edda

Prose Edda

The Prose Edda, also known as the Younger Edda, Snorri's Edda or simply Edda, is an Icelandic collection of four sections interspersed with excerpts from earlier skaldic and Eddic poetry containing tales from Nordic mythology...

, written in the 13th century by Snorri Sturluson

Snorri Sturluson

Snorri Sturluson was an Icelandic historian, poet, and politician. He was twice elected lawspeaker at the Icelandic parliament, the Althing...

. Scholars have proposed theories about the implications of the squirrel.

Etymology

The name Ratatoskr contains two elements: rata- and -toskr. The element toskr is generally held to mean "tusk". Guðbrandur Vigfússon

Guðbrandur Vigfússon

Guðbrandur Vigfússon, known in English as Gudbrand Vigfusson, was one of the foremost Scandinavian scholars of the 19th century.-Life:He was born of an Icelandic family in Breiðafjörður...

 theorized that the rati- element means "the traveller". Vigfússon says that the name of the legendary drill Rati

Rati (Norse mythology)

In Norse mythology, Rati is the name of a drill or auger that was used by Odin during his quest to obtain the mead of poetry from the giant Suttung with the help of Suttung's brother Baugi. According to the Skáldskaparmál section of the Prose Edda, Odin instructed Baugi to bore a hole with the...

 may feature the same term. According to Vigfússon, Ratatoskr means "tusk the traveller" or "the climber tusk."

Sophus Bugge

Sophus Bugge

Sophus Bugge was a noted Norwegian philologist and linguist. His scientific work was directed to the study of runic inscriptions and Norse philology. Bugge is best known for his theories and his work on the runic alphabet and the Poetic Edda and Prose Edda. -Background:Elseus Sophus Bugge was...

 theorized that the name Ratatoskr is a loan from Old English meaning "Rat

Rat

Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus...

-tooth." Bugge's basis hinges on the fact that the -toskr element of the compound does not appear anywhere else in Old Norse. Bugge proposed that the -toskr element is a reformation of the Old English word tūsc (Old Frisian

Old Frisian

Old Frisian is a West Germanic language spoken between the 8th and 16th centuries in the area between the Rhine and Weser on the European North Sea coast. The Frisian settlers on the coast of South Jutland also spoke Old Frisian but no medieval texts of this area are known...

 tusk) and, in turn, that the element Rata- represents Old English ræt ("rat").

According to Albert Sturtevant, "[as] far as the element Rata- is concerned, Bugge's hypothesis has no valid foundation in view of the fact that the [Old Norse] word Rata (gen. form of Rati*) is used in Háv[amál

Hávamál

Hávamál is presented as a single poem in the Poetic Edda, a collection of Old Norse poems from the Viking age. The poem, itself a combination of different poems, is largely gnomic, presenting advice for living, proper conduct and wisdom....

] (106, 1) to signify the instrument which Odin employed for boring his way through the rocks in quest of the poet's mead

Mead of poetry

In Norse mythology, the Poetic Mead or Mead of Poetry , also known as Mead of Suttungr , is a mythical beverage that whoever "drinks becomes a skald or scholar" to recite any information and solve any question. This myth was reported by Snorri Sturluson...

 [...]" and that "Rati* must then be considered a native [Old Norse] word meaning "The Borer, Gnawer" [...]".

Sturtevant says that Bugge's theory regarding the element -toskr may appear to be supported by the fact that the word does not appear elsewhere in Old Norse. Sturtevant, however, disagrees. Sturtevant says that the Old Norse proper name Tunne (derived from Proto-Norse *Tunþē) refers to "a person who is characterized as having some peculiar sort of tooth" and theorizes a Proto-Germanic form of -toskr. Sturtevant concludes that "the fact that the [Old Norse] word occurs only in the name Rata-toskr is no valid evidence against this assumption, for there are many [Old Norse] hapax legomena

Hapax legomenon

A hapax legomenon is a word which occurs only once within a context, either in the written record of an entire language, in the works of an author, or just in a single text. The term is sometimes used incorrectly to describe a word that occurs in just one of an author's works, even though it...

of native origin, as is attested by the equivalents in the Mod[ern] Scandinavian dialects." Modern scholars have accepted this etymology, listing the name Ratatoskr as meaning "drill-tooth" (Jesse Byock, Andy Orchard, Rudolf Simek

Rudolf Simek

Rudolf Simek is an Austrian Germanist and Philologian.Simek studied German literature, philosophy and Catholic theology in the University of Vienna, before becoming a librarian and a docent at the institution. He taught among others in the universities of Edinburgh, Tromsø and Sydney...

) or "bore-tooth" (John Lindow

John Lindow

John Lindow is a professor specializing in Scandinavian medieval studies and folklore at the University of California, Berkeley and author. Lindow's works include Norse Mythology: A Guide to the Gods, Rituals, and Beliefs, a handbook for Norse mythology...

).

Attestations

In the Poetic Edda poem Grímnismál

Grímnismál

Grímnismál is one of the mythological poems of the Poetic Edda. It is preserved in the Codex Regius manuscript and the AM 748 I 4to fragment. It is spoken through the voice of Grímnir, one of the many guises of the god Odin, who is tortured by King Geirröth...

, the god Odin

Odin

Odin is a major god in Norse mythology and the ruler of Asgard. Homologous with the Anglo-Saxon "Wōden" and the Old High German "Wotan", the name is descended from Proto-Germanic "*Wodanaz" or "*Wōđanaz"....

 (disguised as Grímnir) says that Ratatoskr runs up and down Yggdrasil bringing messages between the eagle perched atop it and Níðhöggr below it:

Benjamin Thorpe Benjamin Thorpe Benjamin Thorpe was an English scholar of Anglo-Saxon.-Biography:After studying for four years at Copenhagen University, under the Danish philologist Rasmus Christian Rask, he returned to England in 1830, and in 1832 published an English version of Caedmon's metrical paraphrase of portions of the...  translation: Ratatösk is the squirrel named, who has run in Yggdrasil's ash; he from above the eagle's words must carry, and beneath the Nidhögg repeat.

Henry Adams Bellows Henry Adams Bellows Henry Adams Bellows was a lawyer, state legislator, and jurist born in Rockingham, Vermont. He was elected to the New Hampshire House of Representatives from Littleton, New Hampshire in 1839. He was subsequently elected again to the House from Concord, New Hampshire in 1856–1857, and served as...  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.

In the Prose Edda book Gylfaginning

Gylfaginning

Gylfaginning, or the Tricking of Gylfi , is the first part of Snorri Sturluson's Prose Edda after Prologue. The Gylfaginning deals with the creation and destruction of the world of the Norse gods, and many other aspects of Norse mythology...

, Ratatoskr is attested in chapter 16. In the chapter, Gangleri

Gangleri

Gangleri may refer to:* one of Odin's many nicknames meaning "the wanderer" or "Wayweary"* the name of the ancient Swedish king Gylfi, given while in disguise, as described in the book Gylfaginning collected in the Prose Edda...

 (described as king Gylfi

Gylfi

In Norse mythology, Gylfi, Gylfe, Gylvi, or Gylve was the earliest king in Scandinavia recorded. The traditions on Gylfi deal with how he was tricked by the gods and his relations with the goddess Gefjon.-The creation of Zealand:...

 in disguise) asks High

High, Just-As-High, and Third

High, Just-As-High, and Third are three men that respond to questions posed by Gangleri in the Prose Edda book Gylfaginning...

 what other notable facts there are to know about Yggdrasil. High's account agrees with the Grímnismál attestation but he adds that the messages are slanderous gossip:

'There is much to be told. An eagle sits at the top of the ash, and it has knowledge of many things. Between its eyes sits the hawk called Vedrfolnir [...]. The squirrel called Ratatosk [...] runs up and down the ash. He tells slanderous gossip, provoking the eagle and Nidhogg.'

Theories

According to Rudolf Simek

Rudolf Simek

Rudolf Simek is an Austrian Germanist and Philologian.Simek studied German literature, philosophy and Catholic theology in the University of Vienna, before becoming a librarian and a docent at the institution. He taught among others in the universities of Edinburgh, Tromsø and Sydney...

, "the squirrel probably only represents an embellishing detail to the mythological picture of the world-ash in Grímnismál." Hilda Ellis Davidson, describing the world tree, states the squirrel is said to gnaw at it—furthering a continual destruction and re-growth cycle, and posits the tree symbolizes ever-changing existence. John Lindow

John Lindow

John Lindow is a professor specializing in Scandinavian medieval studies and folklore at the University of California, Berkeley and author. Lindow's works include Norse Mythology: A Guide to the Gods, Rituals, and Beliefs, a handbook for Norse mythology...

 points out that Yggdrasil is described as rotting on one side and as being chewed on by four harts and Níðhöggr, and that, according to the account in Gylfaginning, it also bears verbal hostility in the fauna it supports. Lindow adds that "in the sagas, a person who helps stir up or keep feuds alive by ferrying words of malice between the participants is seldom one of high status, which may explain the assignment of this role in the mythology to a relatively insignificant animal."

Richard W. Thorrington Jr. and Katie Ferrell theorize that "the role of Ratatosk probably derived from the habit of European tree squirrels (Sciurus vulgaris

Red Squirrel

The red squirrel or Eurasian red squirrel is a species of tree squirrel in the genus Sciurus common throughout Eurasia...

) to give a scolding alarm call in response to danger. It takes little imagination for you to think that the squirrel is saying nasty things about you."