Unicorn
Monoceros in Pliny’s account
A fierce animal reported from India, with a single black horn and a body described through comparisons with four familiar animals.
Quick answer
In Pliny’s Natural History, the monoceros is a fierce animal hunted in India and said to resist capture alive. Its single black forehead horn and mixed physical description distinguish this account. “Unicorn” is the English identification supplied in Bostock and Riley’s explanatory note.[1][2]
Quick facts
| Record type | Roman natural history: reported animal |
|---|---|
| Source marker | Pliny the Elder, Natural History 8.31; first century CE |
| Name in the translation | Monoceros; glossed as “one-horned” or “unicorn” in the edition’s note |
| Source realm | India as described by Pliny |
| Reported form | Stag’s head, elephant’s feet, boar’s tail; otherwise horse-like |
| Horn | One black horn, two cubits long, projecting from the centre of the forehead |
| Voice | Deep lowing |
| Capture | Said not to be taken alive |
These are the text’s claims, not measurements or observations verified by this archive.[1][2]
What Pliny reports
Chapter 31 surveys terrestrial animals of India. It first mentions single-horned oxen and a spotted animal called the axis. Pliny then says that the Orsæan Indians hunt a white-bodied ape and the very fierce monoceros. The oxen, ape, and monoceros are separate entries: the ape’s white colouring does not describe the monoceros.[1]
After describing its form and voice, Pliny introduces its resistance to live capture as something said about it. He supplies no named hunter, individual encounter, or capture narrative. This short account records a reported animal rather than the adventures of a named character.[1]
Description and limits
The comparisons in the quick facts describe individual body parts; they do not establish ancestry or a biological classification. The horn’s length is retained in the translation’s cubits, without converting it into an apparently precise modern measurement. Pliny gives no overall height or body colour here. The passage assigns no healing, water-purifying, flying, or virgin-taming power to the monoceros.[1]
Gutenberg note 1725 explains the name as “one-horned” or unicorn. Note 1726 discusses Cuvier and evidence concerning one-horned animals. That later commentary is not an identification made by Pliny, and this record does not resolve the monoceros into a modern species.[2]
The illustrated Aberdeen Bestiary folio has its own account: its translated text gives a deer-like tail and a four-foot horn, whereas Pliny gives a boar’s tail and two cubits. The university’s illustration commentary describes a boar’s tail, so even the folio’s text and commentary must be read separately. These differences are preserved rather than harmonised.[1][3]
Source realm: India in Pliny’s account
India and the Orsæan Indians locate the report in Pliny’s geographical vocabulary. Chapter 31 supplies no forest, mountain, or exact hunting ground. This record therefore offers neither a mapped habitat nor a modern national range.[1]
The archive groups it under Folklore places, alongside other geographically situated historical reports. The record type remains Roman natural history. Its provenance is a Roman text about India, not an independently consulted Indian-language tradition or a shared fantasy realm.
Books and references
- 1Pliny the Elder, The Natural History of Pliny, Volume II
Ancient work: first century CE. Translated with notes by John Bostock and H. T. Riley. London: Henry G. Bohn, 1855. Book 8, chapter 31, “The Terrestrial Animals of India,” pp. 280–281; the monoceros account is on p. 281. Public-domain edition transcribed as Project Gutenberg ebook 60230.
Read Volume II, Book 8, chapter 31 ↗ · Edition and download record ↗ - 2Bostock and Riley, explanatory notes to Natural History 8.31
Same 1855 edition; notes 1725–1726 in Gutenberg’s continuous numbering. Used for the English name and to distinguish editorial discussion from Pliny’s text.
Read the edition’s notes ↗ - 3Aberdeen Bestiary, University of Aberdeen MS 24, folio 15r, “De monocero”
Anonymous manuscript, England, about 1200. University of Aberdeen online facsimile, Latin transcription, English translation and commentary, consulted 12 September 2026; the folio page does not state a translation publication date. Used only for the separate medieval account and illustration. The detail reproduction on Wikimedia Commons is marked public domain.
Folio, translation and commentary ↗ · Image provenance and rights ↗
