Striberu
From Jenny Everywhere Wiki
Striberus were caribou-like animals native to the Frost King's Realm, often used to pull sleigh.
The holiday Raenn involved a tradition of gifting people wooden likenesses of striberus. (PROSE: The Winter Quests) Sifiye's great-uncle commissioned one for Sifiye from Whorrop for what was to be Sifiye's fourth Raenn, being doubly motivated to do so because striberus were the girl's favourite animal. (PROSE: The Frost King's Treasure)