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This article or section refers to elements from Expanded Dune |
Ruh-yaks were large, smelly, wooly bovines used by the natives of Jericha for transportation, in the temperate climate of their world.
In 10196 AG, ruh-yaks were used by the soldiers of the Jihad loyal to the Emperor Paul Muad'Dib to hunt down the forces of his enemy Earl Memnon Thorvald.