What is the equivalent of Palm of my hand?

[MLPOCBeats 3]

So traditionally we say "The palm of our hand" but as we all know ponies of course don't have hands they've got hooves. Ponies tend to have a "frog" which is the technical name for the underside of their hoof. I'm only asking because I don't think I'd hear a pony say: "In the frog of my hoof" it just seems weird. So what I want to know is, do they say "palm of our hoof" or "frog of our hoof?" I kind of lean toward the former rather than the latter.

Edited October 6, 2017 by MLPOCBeats

[KH7672 1,604]

I'd go with more of a foot analogy since hooves are more like feet.

Hence the phrase could be "The villain wants Equestria in the sole of his hoof."