Close but no cigar.
Pierson, a starter, hides Sporty tail. The mother shows Wild tail and hides either Wild or Fluffy. So the Sporty New Kitten can hide Wild or Fluffy, and until I get a Wild from the New Kitten against a Flufffy, I can't tell if Sporty is dominant to Wild or Fluffy. (:
There is a Fluffy hider in Donald which could have passed to the mother, so cannot claim the mother has a pure Wild Tail.