Name: Dryocalamus subannulatus.
I am not 100% on this ID, it could also be a Common Bridle Snake or a Laotian Wolf Snake.
Length: 70cm – measured
Description: This is a thin snake the thickness of a finger. It has black blobs, that can almost be called stripes when looked at from overhead. From the side, as you can see in the image above, the black spots are more like circles stretched out across the body. Further down the snake’s body the stripes change substantially and are completely different in appearance – see 2nd photo below. The eyes of this snake are rather large compared to the very small head. The head is slightly smaller than the neck of the snake. There are two very small rear-fangs seen upon inspection of the mouth. The head of this snake is not elongated in a long triangle like the Lycodon family of snakes – so I’m going with Bridle snake. However, the striking behavior of these snake is identical to Lycodon – in particular the Laotian Wolf Snakes. So, possibility exists that it is that snake, and not a Malayan Bridle Snake.
Range: Thailand’s south and Malaysia. This snake was found in Krabi province.
Habitat: Bushes, trees, and dwellings. This snake is not as common as the Laotian Wolf Snake, but likes the same kind of habitat. Searches trees and structures for geckos primarily. They are excellent climbers and love vines and light brush.
Active Time? Mostly nocturnal.
Food: Small geckos and frogs primarily.
Defensive Behavior: Very inaccurate strikers. They strike almost randomly, just to scare off whatever is bothering them. I’ve been struck at repeatedly and never had her connect with teeth.
Venom Toxicity: Weak or none. Ineffective for humans if there is any venom. The fangs are quite minute – less than the diameter of a regular stick pin.
Offspring: Nothing known about this area.
Notes: These are great snakes, feisty at first, and then, as they get used to people – can be handheld without striking. There is a very real danger of mistaking these harmless snakes with a Malayan, Many Banded, or Banded krait – all of which are deadly. Kraits can get bigger than 1 meter. This snake, and the other harmless black and white banded snakes – will not get over 70cm generally.
Scientific classification: Dryocalamus subannulatus
Species: D. subannulatus
Mid-body photo of Malayan Bridle Snake to show the difference of the stripes in the tail. Here you can see more clearly the true color of the snake which is brown and white, not black and white as might be assumed from the other image.
Video of this Malayan Bridle Snake from Southern Thailand: