The Story of the fall as well as the Creation account are generally considered to be allegorical, by many if not most theologians. However I am intrigued by the passage which tells of the Serpent speaking to Eve, and have wondered on many occasions how that could be possible. I have considered many possibilities some of which are:
Since man had only been conversing with God who understands our thoughts the only others he had to converse with until God created Eve was the animals. So could Adam and the animals have formed some kind of primitive language to communicate.
Even though the Story about the creation might be allegorical would God not keep the main points of the story factual and so the part about the serpent deluding Eve would be central to not only the story of the fall, but even the remainder of the Bible.
Since God told man to take dominion over the animals, it would seem improbable that there would be no other way of communication of his commands other than tedious and time consuming training. And even then there are some animals which resist training.
In Genesis chapter three the serpent talks to Eve:
Genesis 3:1 KJV
Now the serpent was more subtil than any beast of the field which the LORD God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?
There is no indication that Eve is surprised at the Serpent talking:
Genesis 3:2 and 3 KJV
2 And the woman said unto the serpent, We may eat of the fruit of the trees of the garden:
3 But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die.
Again the serpent speaks to Eve and she responds as though she were used to conversing with animals:
Gen 3:4, 5, and 6 KJV
4 And the serpent said unto the woman, Ye shall not surely die:
5 For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
6 And when the woman saw that the tree was good for food, and that it was pleasant to the eyes, and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
Also it may be assumed that Adam was also present and showed no surprise that the serpent spoke, even though we do not know if some time passed between the conversation and the actual eating.
And later even God appears to accept without question that the serpent spoke to Eve:
Genesis 3:13 and 14 KJV
13 And the LORD God said unto the woman, What is this that thou hast done? And the woman said, The serpent beguiled me, and I did eat.
14 And the LORD God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life: