saenomae for both the skelomae custom skeleton and their work on adding native idles to races.
Mod which adds the Bolt Hound tail to players -
Mod has it natively mapped to the Ala Mhigan Earrings.
This mod DOES NOT have any native animations attached to the tail, in order to have it move or be poseable on races other than Miqo'te, Hrothgar, or Au Ra, you need either IVCS or Skelomae along with an animation mod. I created this mod with the Skelomae rig as reference, but it should support IVCS as well. This does mean it works for Lalafel assuming you're hooking into the Skelomae or IVCS rig. Clipping to be expected to some extent on races on either extreme of the body type spectrum.
Quick note that the tail was fitted to TBSE XS for male characters, and Bibo for female - it may have weird fitting issues on other body mods as it was not tested for them.
saenomae has packs for idle tailsways:
https://www.xivmodarchive.com/user/55129Miqo'te/Au Ra/Hrothgar do not have their tail replaced, sorry, I mostly made it for my own character (who is a Viera). You'll need to either hide the tail or adjust the mod.
Feel free to edit, I ask that you do not put any edits behind a paywall. Credit is appreciated.