Where is the hkx skeleton for the beast?

[anijatsu]

Hello! Yesterday I've picked up with playing around with animating characters, and so I'm quite new to this.

I've decided to use 3ds max 2012, the nifskope plugin for it and hkxcmd. First, I've extracted the files from Skyrim's animation bsa file to a folder, got the models in and made the animation in 3ds max, added the note track, exported to .kf with help of the nif plugin, converted back to hkx using hkxcmd app... but I couldn't have found the hkx skeleton file for Khajiit/Argonian characters, so I had to use the human one that was under \character assets\skeleton.hkx, and in the end that obviously didn't have tail bones and made the resulting conversion just skip those. It worked in game, but the tail was stiff, and I don't like stiffy tails.

And there goes my first probably basic question that I somehow couldn't have found the answer for: Are the tail bones handled by something from meshes\auxbones\ folder? That's the only possibly related thing I could've found. Converting the animation using \auxbones\character assets\tailskeleton.hkx skips all the bones aside from the tail ones. Am I supposed to merge two skeletons somehow or perhaps make two separate animation files, for body and tails? I've been looking through Google but it appears that there's nothing fitting this. Maybe I'm just blind.