Eastern Rat snake
This was the first time that I had witnessed a snake not only climbing a vertical surface, but maintaining its grip whilst releasing part of its body to exhibit defensive behaviour. So impressive! Even though it was high up and a good distance away from me, it was clearly too close for comfort for this character.
90 cm body length.
''Pantherophis alleghaniensis'', commonly called the eastern ratsnake, is a nonvenomous colubrid species endemic to North America.