This is a question I have never found a satisfactory answer to. So, I of course asked AI:
Rudolph the Red-Nosed Reindeer has a red nose because his nose glows, which makes him unique among Santa’s reindeer.
In the original 1939 story created for Montgomery Ward and in later adaptations, the glowing red nose is simply a magical trait that sets Rudolph apart. Narratively, it symbolizes:
Uniqueness and individuality — he’s different in a way others first misunderstand.
A hidden strength — his bright nose becomes essential for guiding Santa’s sleigh through foggy weather.
Some modern playful explanations (not in the original story) suggest things like bioluminescence or a very bright vascular nose, but those are just fun add-ons.
In short: Rudolph’s nose is red because it glows, making him the perfect guide for Santa’s sleigh.
I dunno. Sounds like more evasiveness to me. I mean, he's only been doing this job for , like, forever, so, what's the real story here? Is it all a conspiracy cover up? Genetics gone wrong? Why will grown ups just never tell me the truth? What are they hiding? Why is Rudolph's nose red?

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