What is the poem that named the reindeer?

You know Dasher, and Dancer,

And Prancer, and Vixen.

Comet, and Cupid,

And Donner and Blitzen.

But do you recall the most famous reindeer of all???

Chorus

Rudolph the Red-Nosed Reindeer,

Had a very shiny nose.

And if u ever saw it,

U would even say it glows.

All of the other reindeer,

Used to laugh and call him names.

And they never let poor Rudolph,

Join in any reindeer games.

Then one foggy Christamas eve,

Santa came to say.

"Rudolph with your nose so bright

Wont you guide my sleigh tonight."

Then how the reindeer loved him,

As they shouted out with glee.

"Rudolph the red-nosed reindeer,

You'll go down in history."

(Repeat from the Chorus)