I've been wanting to make this follower for some time now, and I finally became skilled enough in the creation kit to add custom skins. So here is the product of my efforts - Aurora the arctic fox. The texture is a tweaked version of the original fennec skin, it is not a new texture.
Aurora can be found in Candlehearth Hall in Windhelm.

Known Spells:
Frostbite
Ice Spike
Frost Cloak
Ice Storm
Blizzard

Requirements:
Playable Fox Race - Fennec

See also:
Ivory the Fennec Mage
Lakota the Lykaios - Wolf Race Follower

Changelog:
v1.01

• Fixed a CTD bug
  

Credits:
dreamcuphk for creating Playable Fox Race