In Avengers, when Loki is imprisoned, you can see his thermal reading (bottom right

if he is a frost "giant" does that mean he has dwarfism?

Shape shifting, actually. Dwarfs are actually rather large

Maybe he's just young for a frost giant. He might get a growth spurt or something.

now im just imagining dnd frost giant sized Asgardian looking loki

I’m fairly certain he’s half frost giant, which is why he ended up in Asgard, because he would’ve died in *the place that I can’t remember the name of right now*

niflheim