Simple Q&A Pathfinder (By RAW) I

[Ashram]

A66: All characters can chose their favored class at character creation. For each level in a favored class, the character gains either 1 extra skill point or +1 hp.

I don't see anything that would indicate that it's different when the character has racial HD.

A66b. That doesn't really hold water, considering "favored class" and what you're effectively saying is "favored race" for the monsters are two different things.

Unless the monsters take class levels, they do not get the +1 HP or skill point per level.