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Failinis: Failinis is a mythological hound from Irish literature, originally belonging to Lugh Lámhfhada of the Tuatha Dé Danann and later associated with the Fenian Cycle.

Failinis - Failinis is integral to narratives involving Lugh and the reparations from the sons of Tuireann, marking the intersection of divine retribution and cultural migration in Irish myth.

Failinis

Failinis - Failinis is integral to narratives involving Lugh and the reparations from the sons of Tuireann, marking the intersection of divine retribution and cultural migration in Irish myth.

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the legend in five swipes.

Failinis is a mythological hound from Irish literature, originally belonging to Lugh Lámhfhada of the Tuatha Dé Danann and later associated with the Fenian Cycle. It served as one of the eric items exacted from the sons of Tuireann, emphasizing its ceremonial significance. This hound embodies a storied blend of divine reparation and cultural migration in Irish myth.

How did Failinis enter folklore?

Which texts first mention Failinis?

Failinis: Physical Form and Supernatural Powers

Failinis: One Legend, Many Local Versions

Do other traditions know Failinis by another name?

Why does Failinis still matter?

Interesting Fact

Failinis uniquely bridges two major Irish myth cycles, representing divine reparation and the movement of mythic groups, making it a rare and symbolically potent figure in Celtic lore.

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Quick Creature Info

Our Mythic Legendary Rating:

Mythic Ember
Mythic Ember rating

Also Sometimes Known As:

Shalinnis

Habitat:

Tuatha Dé Danann and Fenian mythic landscapesMythological cycle settingsIruaith and IrelandOriginated in Iruaith and later became a part of Irish mythMythological realmsOriginally Iruaith, later Ireland

Supernatural Powers:

Enhanced loyaltySupernatural tracking

Physical Attributes:

Hound-whelp originMythological significanceLoyalVigilantEnhanced senses

Abilities:

Keen sense of smellAgilityDivine associationMythological longevity

Behavior:

Loyal and vigilantProtective and obedient, reflecting its divine ownership

Lore:

Mythological companion and reparation item associated with divine and heroic cyclesIrish Mythological Cycle and Fenian CycleFailinis is integral to narratives involving Lugh and the reparations from the sons of Tuireann, marking the intersection of divine retribution and cultural migration in Irish myth

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References

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The Mythological Creatures Book Series

Yōkai, Greek, Norse, Egyptian & Chinese. Five illustrated field guides to the creatures the old stories either warned or told you about.

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Mythological Creatures Field Guide: Egyptian Legends book coverMythological Creatures Field Guide: Chinese Beasts book cover
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Curated by the Mythological Creatures Team

Series editor: Mythological Creatures Directory

Primary desk: Northern & European Folklore Desk

(rev. November 2025)