@Drifter
All the fox noises are fox noises. I think. I have no idea what foxes say.
In literature and drama, Koreans do use "awooo" to emote like the way you said, but I've never heard it used in real life. Also, Chii's noises and speech patterns are apparently very similar to Furude Hanyū from Higurashi.
@Dantrig
Aghhh I can't. I don't have a name or group per se. I just help out some people once in a while. Sorry. Though if your tastes are as degenerate as mine, I'm sure you've read at least one of my works lol