Rentier
Since 'Rudolf' is a name, the spelling is actually the same, but 'Reindeer' is Renntier.
Reindeer.
It is spelt Reindeer.
reindeer
The Flying Reindeer spell in World of Warcraft transforms any flying mount into a flying reindeer. The Flying Reindeer increases ground speed by 100% and flight speed by 150%/280%/310%.
CARIBOU (wild reindeer)
(das) Rentier
deer
The correct spelling is caribou (reindeer).
This is a transposition of the word reindeer(caribou).
Do you mean "Rudolph" as in "the red-nosed reindeer"?
the same way you spell it in German