That is indeed where their ear canals are.

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That is indeed where their ear canals are.

Maybe pretend phones can be used on pretend ears?
I have to imagine there's some fanfic lore out there explaining how the Blueyverse is what comes about after humans destroy the world, and the dogs' top-ears are just vestigial remnants while their functional ears have moved down (though I know there were some scenes where the kids pulled down their ears because of loud sounds -- surely that could just be some leftover instinctual behavior)
Their eyebrows also float in free space so nothing needs to make sense.
Well now it's troubling me, too! Thanks for nothin', OP!
You're welcome! 🫵😉