What I find interesting about the passage is that Eve does not seem surprised at all that an animal talked to her.
She just answered it and carried on a conversation with it.
That would lend itself to conclude that animals talking in the garden was not uncommon.
Of course, there are animals even today which can “talk”. The parrot comes to mind.
I’m guessing then that whatever creature it was had the ability to vocalize or mimic a human voice, and was either possessed by Satan or allowed Satan to use it, which might be more likely the case since God punished the serpent.
Thanks! I think you are onto something here. She is not surprised that a snake is talking to her. If a snake struck up a conversation with me, I would ask for the best Meds available.