General snake question: Biting/Body Language

[ChristinaM]

Hey folks, didn't know where to throw this one, so here it is.

If a snake is going to bite,
does it always go into strike positioning first?
Or is there other physical signs that it wants to bite?

I'm just learning snake body language, so any pointers, other physical actions that generally show whatever, I'd love to hear of them.

Lizards are so easy. Iguana's bob, tailwhip, open mouth threat, etc before biting. My iggy tells me she's hungry by pressing her nose against the glass watching me, till I notice the empty food dish LOL.

Dragons puff out their beards, and an open mouth threat as well. My dragons will stay in their feeding corner when they are hungry...etc.

Thanks