I adjusted this tail to go with my version of the living cat ears, so that they'll respond to the same trigger words so your tail and ears will better work together.
Hiss or grrr will cause the tail to stick straight back (the matching ears will point back as well, just like an angry cat)
Sigh or sad will cause the tail to droop (along with the matching ears)
wrap or oh? will cause the tail wrap back and fourth around you (oh? and huh cause the ears to perk up)
curl or huh will cause the tail to curl up several times
omfg will cause the tail to quickly wrap around you several times (and the matching ears to flicker up and down)