Originally Posted by strange_wings
Everyone notice the key word that is being used is "still", as in cats with an established behavior. Not "new" or "first time" from anyone else posting.
For there to be a "still" there has to be a "first time."
I understand your concerns, but cats, like all creatures, go through developmental periods, and her cat is still a kitten.
The fact that her kitten has only just discovered that it is fun to chase its tail does not constitute a panicked vet call, IMO.
Because the kitten catches
her tail, then licks it, sounds like she is merely chasing her tail, not spinning due to a neurological issue. Were the OP's description different, describing just spinning behavior rather than spinning in a tail chase, I would be more concerned.
A cat simply cannot chase their own tail without spinning.