>>8352
>Earth Pony
I would lean in that direction too. Though I am going to come up with lore related explanations anyway!

>Discord.
Agree here though.

>>8364
Probably referring to this:
https://en.wikipedia.org/wiki/Duck_test

>>8355
I like this logic. If I understand you correctly. The Earth Pony has unicorn parents (or at least a parent) and has to live with the same prejudices.

I wonder if ponies born of wrong races for their tribes would try to rationalize themselves as being part of the bigger tribe. I assume naturally this would not have lasted if I go by what we see in the future. Though, far too much interbreeding existed for anything sort of a ruthless genocide to have wiped it from the population. Remanent populations I imagine would survive somewhere.

>>8356