Related Clues:

• Sven of "Frozen," for one
• Rudolph is one
• Dancer, say
• Prancer or Dancer, say
• Restraint on beloved, heard to be a beast
• Caribou were predominant here, 'Arry reported
• Rudolph, e.g
• Vixen maybe in grass, rolling over, under control
• Tundra herbivore
• Check next to one river and another for animals