What is a "pony-human", exactly? On the surface, it is something rather obvious to any eye whether trained or untrained -- it's a hybrid mix of a pony and a human being, what else is there to know?
But...but...deep under the surface, this act of speciation has so much more to offer and so much more to give. Science, whether the real-world kind or the Odd Squad kind, has only barely scratched the surface of the "pony-human", let alone scratched the surface of the being who birthed such a species to begin with.
An entry into the TAOPaM 'Verse. Linked to the Taking A Walk in the Odd Side episode/chapter of The Adventures of Peaches and Mandy. Pre-reading of that chapter, and of the story as a whole, is not required to understand this story.
Disclaimer: Science and biology are two of my weakest subjects, so don't take this as anything factual. Anything goes in the Odd Squad universe, after all, and the same (mostly) goes for the MLP universe. Let me have fun with this.
Nature is a fucking hellhole don't pretend otherwise.