study buddy, welcome to the place where you can let your imagination loose, without dire consequences , like in the kh.
Note that the serpent in the story not only had human-like vocal capabilities, but understood the talk, even could refute the human thoughts expressed. That is magic, a fantasy, not latent capacities of communication that really existed, even in a walled garden .
Around that place, only God appeared to be a carnivore, because it was he who took the carrion Abel offered off his hand and saved it from going to the dump. so, no fear there except for depleting the vegetation by herbivores' unchecked proliferation from the missing predation.
As to the dispersing of the animals after the flood, if you were cooped up for 9 month in a stinking stall with a simpleton that believed that all life had to be killed by water covering Mount Everest, you would be running too.
Enjoy the banter here, stimulating ideas like yours', even if in left field, are always welcome. its fun to make fun of funny stories, like the one based on the one and only talking snake.