English is a language invented by humans, for humans. Which means some words don't fit well when you're writing about characters who aren't human.
For example: Suppose I write "The demon tiptoed across the room."
My inner nitpicker complains that demons don't have toes. But if I try to replace "tiptoed" with "tiphoofed" (tip-hoofed?), it just looks weird.
Are there any guidelines for dealing with this sort of situation, or do I just have to play it by ear?
Edit: Two of the POV characters are demons - the word choice needs to work for a demon's perspective. And they're obsessed with correctness.
Edit #2: The demons have had billions of years to figure out how to walk on their hind legs. They're perfectly capable of tiptoeing/tiphoofing.