Do Beholder Beasts Have ears?

[Regitnui]

I thought the entire DnD world is a massive Bugsby's Expressive Single Digit to physics!

I invoke Arthur C Clarke! Magic and physics can get along in the same pool, but aberrations are a modified mage hand to both. A beholder shouldn't work, but it does. That's what makes it an aberration. Dragons have powerful magic abilities, elemental breath and massive wings with which to fly. Beholders just obnoxiously float there despite anything magic or physics does to stop them, almost as if they're supported in a dimension for which the humanoid mind just isn't equipped to see.