I would interpret "go about on all fours" as meaning the creature in question
uses all its limbs to walk, belly to the ground. Is there any one who can
track that phrase back to hebrew?
I can read the Hebrew (though not perfectly). I have a Hebrew Bible here as well. And I can do the research on this. This is one of the reasons I brought this up as I did. This is why I mentioned the Hebrew words used.
I say this because, in modern times, WE have no complaints if someone says
"look, that person is down on all fours".
We say that because it is TRUE! If a person is down on their hands and their knees then they are literally on all fours (as opposed to standing on two feet). So the word "four" literally means "four". It is the same in the Hebrew phrase about the creatures.
I conclude that it is possible that the phrase "on all fours" is applicable
where 'all' limbs are being used to move, and the belly is toward the ground,
regardless of the number or type of actual limbs involved.
(Symbolising subserviance maybe? Kneeling an all fours? Like face-down praying?)
Nope. That is not how it is being used. The phrase is not an idiom. It is not a figure of speech. It is written in such a way as to literally mean that the creatures have four legs (and no more).
