Looking to make my own animal companion, alas i can't seem to find the info on the GECK wiki. Can anyone point me to a tutorial for this please?

I looked at copying Rex's info but it looks like that involves editing all his AI packages and scripts, and I'm a bit paranoid about editing those with out a guide.

I really appreciate any help with this. Thanks in advance.

EDIT: Might help if I explained what companion I'm trying to work on. I'm trying to use one of the random ravens that I see occasionally. They make a nice "pop" when i blast them with my hunting shotgun. Anyway, I'm also trying to use NCCS companion mod, but not having any success with that either.

EDIT 2: I finally got my raven in the game and recruited using NCCS companion mod. But he just pecks at the ground, no flying, no attacking even when attacked. So I look at him in the GECK again and find that he's only got one KF file, "mtidle.kf". How do I add more to the list to get proper combat/movement animations? Or am I looking at the wrong area completely.

First, you would have to make the necessary animations for the raven's skeleton, which is kind of replying to the question "how do I become a millionaire?" with "first, you get a million dlls"

Well, the animations are in the game, somewhere. When I get close to the ravens in the game, they fly off, not just vanish from spot to spot. I'm wondering why the GECK isn't displaying them though.