Nemean Lion

Overview

The lion terrorizes the country around Nemea and becomes the first labor in the Library’s account of Heracles. An initial attack with arrows fails because the hide cannot be pierced. The hero then approaches a cave with two openings, blocks one exit and confronts the animal inside, changing the contest from a ranged hunt to a struggle.

Heracles defeats the lion by gripping and choking it, and its skin becomes closely associated with his later appearance. The episode explains both a heroic achievement and a recognizable attribute of the hero. Nemea is a place in the narrative, while the impervious hide marks this particular lion as extraordinary. Its story does not imply that ancient Greek writers considered all lions resistant to weapons.

The Library 2.5.1 calls the invulnerable beast an offspring of Typhon. Its defeat is framed by Heracles’ stay with the labourer Molorchus at Cleonae. The host wishes to sacrifice, but Heracles asks him to wait thirty days: a safe return will require an offering to Saviour Zeus, whereas his death will require honouring him as a hero. Heracles brings the lion back on his shoulders just as Molorchus is preparing the latter offering, and they sacrifice to Zeus instead. At Mycenae the frightened Eurystheus bars the victor from the city and orders future trophies displayed outside the gates; his hiding place and the intermediary herald follow in the same narrative.

Hesiod’s Theogony, in its offspring passage ending at line 332, gives a different genealogical setting. After Echidna’s union with Orthus, it names the Sphinx and Nemean lion; Hera raises the lion as a scourge and settles it in Nemea’s hills. It preys upon the people and ranges over Tretus and Apesas before Heracles overcomes it. This poetic account supplies Hera’s hostile purpose and local places, but does not narrate the blocked cave, the thirty-day sacrifice agreement or the invulnerability test. Its family relationships are kept distinct from the Library’s statement about Typhon.

The twenty-fifth idyll transmitted with Theocritus gives Heracles an extended first-person account of the hunt. Phyleus notices his hide and asks how he killed the extraordinary animal. Heracles says that its origin is unknown to the Argives; divine anger is a conjecture in his speech, not a settled genealogy. He searches a deserted countryside whose frightened inhabitants remain indoors, then sees the blood-covered lion returning to its lair in the evening. Two arrows rebound harmlessly, from flank and breast.

When the lion charges, Heracles strikes its head with his wild-olive club, breaking the weapon but stunning the beast. He seizes it from behind to avoid the claws and strangles it. Unlike the Library’s blocked-cave route, this narrated fight follows the charge. Skinning creates another problem because neither steel nor stone can cut the hide. An unnamed immortal suggests using the lion’s own claws, and Heracles explains that he then wears the skin as protection. The poem leaves that divine adviser unnamed.

Origins & earliest records

This entry follows The Library, Book II, at 2.5.1, in the linked English translation. The work preserves a particular ancient narrative rather than establishing the first appearance of every motif. Its composition period dates a surviving literary witness; older oral transmission and earlier artistic evidence require separate investigation. Idyll XXV in the Theocritus collection preserves a further first-person fight account; its attribution is qualified in the cited edition.

Records & interpretation

Hesiod, Library and the transmitted twenty-fifth idyll give distinct genealogical, heroic and first-person literary settings. The idyll explicitly leaves the lion’s origin unknown and its helpful immortal unnamed; neither is supplied from another version.

In the literature

Selected bibliography

Documented works and useful reading. This is not a list of every appearance.

1. 01

   The Library, Book II, 2.5.1

   Pseudo-Apollodorus; translated by James George Frazer · c. 1st–2nd century CE; translation 1921

   Full Library2.5.1 encounter and Molorchus/Eurystheus aftermath; kept distinct from Hesiod’s genealogy.

2. 02

   Theogony, offspring passage, lines 326–332

   Hesiod; translated by Hugh G. Evelyn-White · Archaic Greek poem; translation 1914

   Hera’s rearing of the lion, Tretus and Apesas; genealogy distinct from Library2.5.1.

3. 03

   Idyll XXV, Heracles the Lion-Slayer (Lang edition pp. 132–143)

   Poem transmitted in the Theocritus collection; rendered into English prose by Andrew Lang · Ancient Greek poem; hosted edition 1889

   Complete preserved fragment read; Phyleus’s question and Heracles’s lion narrative on pp. 139–143. Lang notes incomplete preservation and disputed attribution.

4. 04

   Theogony, in Hesiod, the Homeric Hymns, and Homerica

   Hesiod · 1914

   Historical English translation; translator’s preface dated 9 September 1914. Gutenberg includes the English portions and relocated footnotes.

5. 05

   The Library (Bibliotheca)

   Pseudo-Apollodorus · 1921

   Pseudo-Apollodorus, The Library, James George Frazer translation, Loeb Classical Library 121–122; Harvard University Press / William Heinemann, 1921.

Family, evolution & connections

Located primary passages

Specific passages supporting details in this entry, grouped by their published witness.

References

Sources supporting this profile. Linked pages have their own scope and editorial standards.

1. Primary textThe Library, Book II: 2.5.1 (Theoi Classical Texts Library or Project Gutenberg transcription)Research access: 2026-10-05
2. Primary ancient text in historical translationTheogony, offspring passage, lines 326–332Research access: 2026-10-05
3. Primary textTheocritus collection: Lang1889 edition transcription, Idyll XXVResearch access: 2026-10-05

Image credits

Nemean Lion

Image associated with the exact linked encyclopedia article; consult credited file description for its interpretation.