Noll's Tale of Two Kitty Tails

A tail is a cat's pride and joy.
It goes perpendicular when happiness happens.
It switches, it twitches then curls like a coil.
A tail is a cat's personal play toy.
Like a man's clothes, a tail makes the cat!

Floofy or sleek, plain, striped or fat,
A tail is as unique as the cat that's attached.
Take a look once, Take a look twice.
Guess if you must, Give up if you'd like.
What I want to know, truth be told
Is, can you tell Tiggy's tail from Noll's?