Some mild flirting between young reindeer.

None.

Rudolph is forced to wear a fake nose and objects to it.

A character was thought to be dead in one scene but is found to be alive a little later. There's no blood at all.

Some name calling is used by other reindeer to make fun of Rudolph for having a red nose

Minor name calling such as "nitwit"

none

Hermie is frequently scolded by the head elf for not wanting to make toys.

Rudolph is bullied by the other reindeer.

The Abominable Snowman may be too frightening for younger audiences at first, though he does redeem himself at the end.

The intro features various live-action news reel clips that depict people and cars being stranded in a fierce snow storm. The music is loud and dramatic and the snow sound effect is intense, but not frightening at all.