Oriental whip snake (Ahaetulla prasina) in Singapore. The keyhole shape of the pupil and the narrow snout along with the grooves front of the eye are enhancing the binocular vision of this snake which is essential in its native arboreal environment.

Oriental whip snake (Ahaetulla prasina) in Singapore. The keyhole shape of the pupil and the narrow snout along with the grooves front of the eye are enhancing the binocular vision of this snake which is essential in its native arboreal environment.