would a pooltoy yinglet use zh instead of th? would it if it had a permagrin? what if it was a recently transformed person? what if it was a recently transformed yinglet?

A tadpole is both a frog and not a frog; it is not yet a frog, but it is also undeniably inseparable from frogness. This is true regardless of the fact that there are frogs (the Pristimantis) which are never tadpoles; they develop directly into their adult form. Some frogs are born being recognized as frogs, some have to grow a bit first- but they're all frogs.

I wonder how often people used to talk about those blurry dots you see wherever you look before we knew why they were there
I have no idea how to describe them without sounding like I'm insane, but the things that are caused by the one part of your eye not having light sensors or whatever