Genesis 3:1 - 24
ESV - 1 Now the serpent was more crafty than any other beast of the field that the Lord God had made. He said to the woman, "Did God actually say, 'You shall not eat of any tree in the garden'? 2 And the woman said to the serpent, "We may eat of the fruit of the trees in the garden.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
So from the scripture in Genesis the serpent was either crawling on some limbs, or could have been upright before it was cursed?