Category Archives: rear-fanged

Red Necked Keelback – Venomous – Dangerous

Red Necked Keelback Snake, venomous, Thailand and southeast Asia.
A beautiful snake, usually under 1 meter, not very aggressive. ©2009 ThailandSnakes.com.

(Page Updated: 1 May 2019)

Rhabdophis subminiatus (Red-Necked Keelback Snake)

Thai: (ngoo lay sab ko dang)

Length: Up to 100 cm (1 meters). I’ve never seen one close to 1 meter in length.

Range: Thailand and southeast Asia.

Notes: These snakes are commonly found near water, lakes, ponds, and in gardens. Recently a friend had one in his swimming pool in Krabi town, southern Thailand.

Active Time? Daylight hours. I’ve found them sleeping around 1 foot off the ground in bushes.

Food: Frogs, poisonous toads, and fish. I have not seen them eat anything but frogs and toads.

Defensive Behavior: Spread out the neck slightly to make themselves appear bigger. Not as dramatic as a cobra. Lift their head and neck off the ground 4-5 inches.

Some snakes of this species, and others in the genus Rhabdophis, have displayed a rather unique defensive behavior of exposing the back of their neck and secreting poison from their nuchal glands. This is not all that common unless very provoked.

One researcher, Kevin Messenger, claims that the R. subminiatus helleri he caught in Hong Kong actually sprayed a mist of the poison into the air from the back of the neck. Quite amazing, if true, right? Obviously more study is needed into the secret life of this fascinating snake. Other snakes in Rhabdophis genus with nuchal glands: R. nuchalis, R. tigrinus, R. nigrocinctus, and R. chrysargos (in Thailand).

Here is an image of the snake expressing poison from the nuchal glands.

Nuchal gland poison from Rhabdophis subminiatus helleri
The liquid on the neck near the top of the red shade is poison acquired at least in part, from eating poisonous Bufo toads.

Here is the description in a scientific journal about Kevin’s encounter.

Venom Toxicity: LD50 is 1.29 mg/kg for intravenous injection (source). That is about the same rating as the very deadly “Banded Krait (Bungarus fasciatus)”. It was previously thought these snakes were harmless. Some kept them as pets and were bitten. In one case the snake was left to bite for two entire minutes before removing it from a finger.

Serious complications resulted requiring hospitalization and intensive care. Click for article. These snakes are rear-fanged and need to bite and hold on, or, repeatedly bite to have any effect on humans. Once they do either – there is the possibility of severe problems including renal failure and death. Recently a small boy of 12 years old was bitten by one he was keeping as a pet in Phuket, Thailand and he is currently being treated (11/5/10). Be very careful not be be bitten by these snakes. There is NO ANTIVENIN available yet for these snakes in Thailand. Scroll down for information about antivenin manufactured in Japan that may have some positive effect.

Another study in Japan ranked the venom as having an LD50 of 1.25 mg/kg for intravenous injection. (Japan Snake Institute, Hon-machi, Yabuzuka, Nitta-gun, Gunma-ken, Japan) V.1- 1969- Volume(issue)

In Japan they make limited amounts of antivenin, but it is specifically for their in-country use.

One WHO (World Health Organization) publication about the management of venomous snake bites in Southeast Asia mentions the antivenin for Rhabdophis tigrinus in Japan as having some effect on the venom of R. subminiatus. I am not sure if this is strictly for R. subminiatus found in Japan, or not. Worth a try though if you can get them to send you some antivenin. Otherwise, there is no other option – there is no monovalent antivenin specifically for R. subminiatus.

Japan Snake Institute
Nihon Hebizoku Gakujutsu Kenkyujo
3318 Yunoiri Yabuzuka
Yabuzukahonmachi Nittagun Gunmaken 379-2301
Tel 0277 785193 Fax 0277 785520
Snake-c@sunfield.ne.jp
www.sunfield.ne.jp/~snake-c/
Yamakagashi (Rhabdophis tigrinus) antivenom. Also effective against rednecked keelback (R. subminiatus venom)

Update: The 12 year old boy bitten by the Rhabdophis subminiatus was treated for 2 weeks of intensive care, and released. He was bitten multiple times, the 2nd bite lasting over 20 seconds.

Offspring: I had a juvenile red-necked keelback I’ve taken photos and videos of and released into the wild. I cannot find anything much about offspring. Recently (mid-June) I found a DOR juvenile very recently hatched, so like most snakes in Thailand the time around June is when they are hatching out. The coloration of the juvenile is quite different from adults as you can see in the photo and video below.

Rhabdophis subminiatus Juvenile
A hint of red on the neck in the juvenile. A pronounced black banding at the neck and grey on the head is evident in juveniles.

Notes: These snakes can inflict a deadly bite when they are allowed to bite for longer than a couple of seconds. I know personally of two instances where a child was bitten for well over 20 seconds, and a man was bitten for about a minute. Neither wanted to hurt the snake to remove it forcibly, and both spent over a week in intensive care, with the possibility of renal failure and death. Do not play with these snakes. If you have one, do not free-handle it. Treat it like you would a pit viper or a cobra. The LD50 on this snake for intravenous was stated to be 1.29 mg/kg. That is VERY venomous.

As a precaution, any snake in the Rhabdophis genus should be treated with extreme caution. In Thailand we also have the diurnal Rhabdophis nigrocinctus, and Rhabdophis chrysargos, both of which may be able to inflict a medically significant bite if given the opportunity.

Red-necked Keelback Scientific Classification

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Rhabdophis
Species: Rhabdophis subminiatus

Video – Red-necked Keelback

Video – Red Neck Keelback Snake ( <- click) video

Banded Mangrove Snake – Venomous – Mildly Dangerous

Mangrove cat snake at night in situ, secondary tropical rainforest in Southern Thailand's Krabi province.
One of the B dendrophila snakes I’ve found at night in the tropical secondary rainforest in Southern Thailand, Krabi Province.

(Page Updated: 6 September 2016)

Mangrove Cat Snake – Boiga dendrophila

Thais say: Ngoo plong tong

Length: Up to 250 cm

Description: This is a long, strong snake with a rather pronounced vertebral column. The head is black on the top with bright yellow supralabial scales which have black edges, producing a striking effect. The snake is black on the back and laterals with thin yellow bands extending from the venter to usually about mid-body. It is not common for the bands to meet at the top. Ventrals are very dark grey to black except where yellow from the bands. The eyes are large with vertical pupils. The chin and throat are bright yellow. The inside of the mouth is white. Tongue is dark grey to black. Juveniles of this species are same as the adults.

This snake is nocturnal and arboreal, but can often be found on the ground or in bodies of water as well.

NOTE – there is some danger of misidentifying this species with the deadly Bungarus fasciatus – the Banded Krait.

Range: Thailand-wide. Found in humid forests of all sorts, especially near or in trees above streams or other fresh or saltwater up to 610 meters. They can be found resting in branches in daytime above water in the mangroves or on mountain freshwater streams from 3 meters to 6 meters high.

Habitat: Trees, land, and water – salt and fresh. It sleeps in many different trees including the leaves of mangrove trees in the mangrove, and on large palm trees.

Active Time? Nocturnal.

Food: Frogs, lizards, eggs, fish, and other small animals. They can frequently be seen heading upstream along stream banks looking for frogs at night from dusk to midnight or so.

Defensive Behavior: These snakes curl up in a double-s shape before striking. They are rather quick to bite.

Venom Toxicity: Weak, but with some medically significant envenomations recorded in literature. No confirmed fatalities. B. dendrophila is a rear fanged colubrid. The fangs are not large, and it isn’t easy to get a good bite on a human leg or arm where venom can be transferred. Don’t attempt to hand-hold a snake that is prone to biting.

I know a Burmese man that worked in the snake show in Krabi for years, he was bitten many times by this species while on a boat collecting them in the mangroves. At times after being bitten repeatedly he reported getting a bad headache which abated after 20 minutes or so.

Offspring: Four to fifteen large eggs. Offspring of 35-43 cm hatch after ~12 weeks and strongly resemble adults in coloration and pattern.

Notes: These are great looking snakes with a lot of energy for striking. Unfortunately, their look and their energy make them perfect for use in the snake shows across Thailand. It is not uncommon for these snakes to die in captivity.

Yellow Banded Cat-Eyed Snake (Mangrove Cat Snake) Scientific classification

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Boiga
Species: B. dendrophila

Binomial name: Boiga dendrophila
(Boie, 1827)

Krabi rainforest mangrove cat snake (Boiga dendrophila)

Video – Release of Mangrove Cat Snake

Video – Large 2 Meter Mangrove Cat Snake(/h2>

Green Cat Snake – Mildly Venomous and Not Dangerous

Adult green cat-eyed snake, Boiga cyanea found in Southern Thailand
Green Cat Snake (B. cyanea) on our porch one night around midnight. About 2 meters long.

Green Cat-eyed Snake – Boiga cyanea

Length: Up to 186 cm

Description: This is a long, slender green snake (งูเขียว) with a vertically compressed body (shallow vertebral ridge). It is overall green, with a blue tint to it. The eyes are large with vertical pupils. The chin and throat are blue-white. The inside of the mouth is black. Young snakes of this species are brown / red hued with a green head.

This snake is nocturnal and arboreal, but can often be found on the ground as well.

Range: Thailand-wide. Found in evergreen forests, but also found in housing developments. The first one of this species that I found was on my porch at midnight, using my motorbike to reach higher on the windows for geckos. When I followed it, it climbed a small tree and rested about 2.5 meters high until I left the area. Found in a variety of forest types up to 2,100 meters.

A lot of blue in the scales make this snake somewhat easy to identify. Blue, and the size of it! Often misidentified as a viper because the head is oddly shaped, like an arrowhead.

Habitat: Bushes and trees.  This snake is an excellent climber.

Active Time? Nocturnal.

Food: Geckos and other lizards appear to be its primary food source, but they will also eat small mammals, birds, eggs, other snakes, and frogs.

Defensive Behavior: I have not seen this snake strike often, they calm down with gentle handling very quickly. Usually, they are very calm.

Venom Toxicity: Weak or none. Rear fanged, and the fangs are small and it is not easy for the snake to get a good grip to chew in the venom. That said, at least one instance of significant envenomation has been recorded. Don’t attempt to hand-hold a snake that is biting.

Offspring: Nothing known about this area.

Notes: These are great snakes for first-time snake hobbyists to handle for a short time in the wild. If they are striking initially, they quickly calm down when held for a short time. There is a very real danger of misidentification of a small non-venomous B. cyanea with one of the venomous green vipers.

Scientific classification: Boiga cyanea

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Boiga
Species: B. cyanea

Binomial name: Boiga cyanea
(Duméril, Bibron & Duméril, 1854)

Video – Green Cat Snake found in Southern Thailand

Video – Green Cat Snake strikes at the camera (not expecting it)

#greensnake #งูเขียว

Malayan Bridle Snake – Non Venomous – Not Dangerous

Close-up of Dryocalamus subannulatus, the Malayan bridle snake.

Malayan Bridle Snake - Dryocalamus subannulatus in Thailand primary rainforest in Krabi province on the Malaysian Peninsula.

[Last updated – 10 May 2017]

Malayan Bridle Snake – Dryocalamus subannulatus

Length: 70 cm

Description: This is a thin snake less than the thickness of a finger. It has a light yellow mask and comes in one of two color pattern variations. Shown here is the pattern with a brown background and longitudinal stripes running from neck to tail. There is one along the vertebral ridge and one on each side. 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 – which is one way to tell the difference.

Range: Thailand’s southern provinces. This snake was found in Krabi province at 450 meters elevation at 2200 hours two meters high on a thick tree covered with moss (see photo below). I have also found them at 200 meters elevation in evergreen forest and around 100 meters on a sloped rock face.

Habitat: Bushes, trees, and dwellings. This snake is not as common as the Laotian Wolf Snake, but likes the same kind of habitat – but is usually climbing on something. It searches trees and structures for geckos primarily. They are excellent climbers and love vines and light brush.

Active Time? Usually nocturnal.

Food: Small geckos and frogs primarily.

Defensive Behavior: I have yet to see this snake strike, even after handling a half-dozen of them. Usually they are very calm.

Venom Toxicity: Weak or none. Ineffective for humans if there is any venom. The fangs are quite small – less than the diameter of a regular stick pin.

Offspring: Nothing known about this area.

Notes: These are great snakes for first time snake hobbyists to handle for a short time in the wild. If they are striking initially, they quickly calm down when held for a short time. 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 70 cm generally.

Scientific classification: Dryocalamus subannulatus

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Dryocalamus
Species: D. subannulatus

Photo taken in situ, Ngorn Nak Mountain, Tub Kaak Subdistrict of Krabi Province, Southern Thailand:

Dryocalamus subannulatus, in situ, Southern Thailand. Common name: Malayan bridle snake, striped color pattern.

Malayan Bridle Snake – second pattern (more common):

Malayan bridle snake - Dryocalamus subannulatus in banded pattern form from Southern Thailand's Krabi province.
White or yellow bands on brown or black body is the typical pattern for this snake.

Mock Viper – Psammodynastes pulverulentus – Not Dangerous

Mock Viper - Southern Thialand - P. pulverulentus.
The mock viper has a very detailed pattern on the head, and somewhat distinctive pattern on the body. This snake is harmless for people, despite its resemblance to the Malayan Pit Viper – dangerous and deadly.

(Page Updated: 22 November 2017)

Psammodynastes pulverulentus (Mock Viper, Dusky Mock Viper, Common Mock Viper)

Thais say: ngoo mok

Length: Adults average about 75 cm (28 inches)

Range: All over Thailand and southeast Asia including Indonesia, Philippines, Vietnam – even getting over to Nepal and the other way, Taiwan.

Habitat: Typically the mock vipers enjoy hilly regions. I found one at a local Buddhist temple (the mock viper you see in the images on this page) at the bottom of a limestone mountain, with a skink it had just killed in southern Thailand. Mock vipers can also be found under leaves and brush. Recently we found two of them in some leaf litter on a mountain. Apparently they like a variety of habitat.

Active Time? Nocturnal primarily, but as I mentioned I found one during the morning about 10:30 am., and I found two more at night around 10 pm. These Thailand snakes are terrestrial – preferring the ground to trees.

Food: Skinks and other lizards, and of course, frogs – like nearly every other snake in Thailand. The adult mock viper I found in the morning was eating a large skink. This mock viper also, occasionally eats other small snakes.

Defensive Behavior: Slow to bite, they coil up as most snakes and strike. I handled mine repeatedly and didn’t get struck at but a couple of times.

Mock Viper - Non Venomous - Not Dangerous, native to Thailand
Mock Viper – Non Venomous – Not Dangerous

Venom Toxicity: Probably not toxic enough to hurt people or large pets. Rear-fanged, but not know to cause medically significant bites.

Offspring: This species is ovoviparous, embryos develop inside eggs which remain inside the mother where they hatch. Mating has been observed occurring for over one hour in a tank for m/f mocks in captivity.

Note – Males have 3 hemi-penises, one of very few snakes with this anatomy.

Notes: These are really beautiful snakes. Mock vipers have a thick, strong body. They are not really vipers, but they do possess a weak venom that doesn’t affect humans much. They are rear fanged. Female mock vipers are larger than the males on average at adulthood.

IMPORTANT: There is a chance you will confuse it with the highly toxic venomous snake, the Malayan Pit Viper. It has markings that are very similar, though it doesn’t have the giant triangular head of the Malayan pit viper – it is pretty close. I thought I had a mutant Malayan pit viper when I first found this species.

Mock Viper top and head, Thailand venomous snake
Very distinct markings, not similar to a Malayan Pit Viper when looked at closely
Mock Viper with Dead Skink Meal
He regurgitated that skink as some tourists poked him with a stick before I arrived.

Video – Mock Viper Found at Night

Video – Mock Viper I Caught in the morning in Southern Thailand:

Common Mock Viper Scientific classification

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Psammodynastes
Species: P. pulverulentus
Binomial name: Psammodynastes pulverulentus
(classified by H. Boie, in year 1827)


My Favorite Herping Gear

I Love these Headlamps for Herping

  • My fav. HEADLAMP (light, programmable, Bluetooth, tough)
  • another favorite, less expensive HEADLAMP (tough, crazy bright). Make sure to get the ‘cool white’ option.

My Favorite Knife

My Favorite Gear for High-rez Video

  • 4K Video capable (expensive – replaceable batteries)
  • 4K Video (inexpensive, stabilization not as good as above. I have this one.)

Incredible Macro Lenses

Mobile Phone with 4K Backup

Golden Tree Snake – Mildly Venomous

Golden Tree Snake - Chrysopelea ornata ornatissima - Southern Thailand
Golden Tree Snake – Venomous – Little Danger to Humans

These Golden Tree Snakes are also known as Flying Snakes. They glide very well, perhaps the best of any snake in the world, and even better than some squirrels and lizards. Golden Tree Snakes are lime green (งูเขียว) and black checkered type patterned snake. They are tree dwellers but can climb anything, even walls. They appear to have a favorite food – the Tokay Geckos that reach sizes of 12+ inches long in adulthood. They are frequently seen eating Tokays.

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Chrysopelea ornata (Golden Tree Snake)

Thai language: Ngoo kee-ow ly dok mak

Appearance: Chrysopelea ornata in Thailand is lime green with some black and green crosshatches. This snake’s head is rather flat with a thin neck and atypical blunt nose, large eyes which sometimes are red depending on the angle. Generally seen as a green snake (งูเขียว) while moving.

Length: Up to 140 cm (almost 5 feet). They only get about as thick as 2-3 fingers held together.

Range: All over Thailand and many countries in Southeast Asia.

Habitat: Golden Tree Snakes can be found just about anywhere – in an apartment in Bangkok, or climbing bushes at 500 meters vertical elevation. Typically I see them at sea-level crossing the roads, or laying flat out along the stem of a low-lying palm tree branch.

Notes: If you’re trying to catch one of these snakes it can be very difficult. They are excellent escape artists and once they get into a clump of bushes or up a tree – forget it. Go look for something else, you won’t catch it. They can disappear in trees so fast it’s hard to believe. Occasionally, you can find these in caves – they eat bats too.

Active Time? Diurnal – daytime.

Food: Small geckos, lizards, large Tokay geckos, rodents, bird eggs, insects, another snake occasionally, and bats. Golden Tree Snakes kill by squeezing the neck of their prey, crushing it.

Natural Enemies: King cobras and Kraits will eat these snakes when they can catch them. When they are small, birds eat them.

Defensive Behavior: Golden Tree Snakes (flying snakes) bite quickly when played with. As adults, they may not lose that temperament. As babies – I have one now for some photos and video, they lose it quickly – and are OK with being held. They are very fast snakes when escaping.

Venom Toxicity: Rear fanged mildly venomous snake – but the venom is not known to be dangerous to humans. Just the same, don’t let it bite down on you more than a second or two before you remove it. Don’t give this snake a chance to inject a lot of venom and you’ll likely be just fine if no allergies to it. There have been no confirmed cases of medically significant envenomation with Golden Tree Snakes.

Offspring: Little is known about the breeding habits of these snakes because nobody can seem to get them to mate while captive. Being oviparous it lays 6-12 eggs in May-June and they hatch in June. Baby snakes are 11-15cm long (4-6″)

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Chrysopelea
Species: C. ornata
Binomial name: Chrysopelea ornata

Discovered, classified by Shaw, 1802

Golden Tree Snake Photo:

In Thailand the golden tree snakes typically have this coloration and pattern.
In Thailand the golden tree snakes typically have this coloration and pattern.

Video: My Baby Golden Tree Snake in Thailand:


#งูเขียว #greensnake

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Dog-Toothed Cat Snake – Boiga Cynodon Photos

Amazing colors and eyes on the Boiga cynodon - yes?

If you want to see our Fact Sheet for Boiga cynodon – Click Here.

Two photos of one of my favorite of all Thailand snakes – the dog-toothed cat snake. These are the longest of the cat snakes and get nearly 3 meters in length. They have a strange shaped head, as most cat snakes – and some would swear it was a viper. Many Thais see the triangle shaped head of these snakes and kill them immediately. Well, wait a sec, what snake DON’T Thais kill immediately?

These are primarily egg and bird eating snakes. Frequently they are caught after eating a bird in a cage, and they cannot get out of the cage. Birds seem to know this snake is a bird-eater because sometimes the way you find these snakes is to go see what the birds are squawking about – if there is one of these snakes in a tree near a nest – you’ll know it when the birds know it. All the Thai bird-keepers are familiar with this snake because they see them often.

These dog-toothed cat snakes have extraordinary patterns. The yellows and browns are amazing together and it’s definitely one of the most pleasant looking snakes you’ll find in Thailand – and maybe anywhere.

Here is another shot of the same snake, Boiga cynodon. It’s about 2 meters long. Notice the shape of the body, the cross-section. It has a very high vertebral ridge. These snakes can climb VERY well.

I’ve hand-held the dog-toothed cat snakes before and no problem… but this one struck at me repeatedly.

I have some video of a larger Boiga cynodon caught here in southern Thailand and a fact sheet for the snake at the link below:

Boiga cynodon

Striped Bronzeback Snake – Thailand – Dendrelaphis caudolineatus

Striped bronzeback snake from southern Thailand
Striped Bronzeback Snake - Thailand - Dendrelaphis caudolineatus

I had a juvenile striped bronzeback a little while back – video here.

These are fast, tree climbing snakes that are active during the daytime and are frequently found in residential areas. They love frogs and lizards, from what I’ve seen them eat.

These snakes are exceptionally beautiful. They are rather nervous – meaning, they are very aware of what is going on around them – like an Indo-Chinese rat snake – antsy and ready to bolt in a second if given the opportunity. This one is in an aquarium, and when I slid the top off to the back just slightly – it was enough for him to fly out of the top and almost lost in the tree next to us. I was able to get his tail and put him back in the cage without any problem, but it reinforced just how fast these snakes are – similar to the golden tree snakes in speed and habit, personality.

Golden Tree Snake – Chrysopelea ornata, Common in Thailand

Golden Tree Snake - Thailand - Chrysopelea ornata ornatissima mildly venomous, no danger to humans.
Golden Tree Snake – Thailand – Chrysopelea ornata. © Vern Lovic.

These are like the road runner of snakes – they are super fast, thin, and agile. They can climb trees and bushes faster than any other snake I’ve seen, and they are wicked fast on the strike. Yesterday I saw one strike so fast I couldn’t see it. That’s fast.

These are very common snakes here in Thailand, they are definitely one of the top 5 snakes you are likely to see in this country. On average I see 1-2 a week – without looking for them. They are constantly snaking across the roads. I have given chase about a dozen times and was only fast enough to catch them 4 out of 12 times. Once they hit the green brush – forget it man – they are impossible to find or catch if you do see them. So, the best chance to catch this snake is on the road if you can jump off your motorcycle or out of your vehicle fast enough.

These snakes bite fast and often, and they do have venom, but the venom is only toxic to frogs, lizards, and other small animals – not usually humans. If you happen to be allergic to the venom, you could still go into shock, though I’ve not seen any cases of this in the literature.

More information available at the Chrysopelea ornata ornatissima fact sheet ->

Striped Bronzeback Snake – Non Venomous – Not Dangerous

Striped bronzeback snake from Southern Thailand - Dendrelaphis caudolineatus
Juvenile Dendrelaphis caudolineatus – Not Venomous – Not Dangerous

Dendrelaphis caudolineatus (Striped Bronzeback Snake)

Length: Up to about 1.5 meters. The males are a bit more red on top, and slightly thinner.

Range: The Striped Bronzeback is found in southern Thailand through the Malaysian Peninsula, and to Singapore, Sumatra, Java, Borneo, and the Philippines. The snake shown here was caught in Tub Kaak, Krabi Province in southern Thailand.

Habitat: Forests and lowlands up to about 1,500 meters. They are found on trees primarily, and often on the ground too in search of prey.

Active Time? Diurnal – daylight.

Food: Frogs, lizards, some say small birds in the nest.

Defensive Behavior: A quick bite – coiled beforehand, or not. I was bitten when I grabbed his tail when I first saw him. I expected it. He caused a little blood on the top of my pointer finger by the big knuckle. There are a couple of small bumps there now. I experienced no serious symptoms.

Venom Toxicity: No venom. No danger.

Offspring:

Notes: Striped bronzeback snakes are somewhat larger than the other bronzebacks, and can get up to about 1.5 meters. The one in the photo and video below was caught at about 300 meters elevation (900+ feet) on a fallen tree. I stepped over the tree and the snake fell to the ground and attempted to hide under another rotting tree stump. I had to decide in about 1 second whether the snake was venomous and whether I could step lightly on his tail to stop him from disappearing. I saw the tell-tale head shape and stripe down the side and knew it was a bronzeback, but there are about 6 species of bronzeback in Thailand. I hadn’t caught one of these until today.

These snakes are diurnal – active during daylight hours and are excellent climbers, as all bronzebacks are. They are twitchy snakes, and this one bit me when I first grabbed him. I had to pull him off my index finger slowly to prevent injuring him. He bit down hard for his tiny size (about 10 inches). These snakes love frogs and other small animals – geckos included.

This species of bronzeback has a black stripe on a light background running from it’s neck to it’s tail. The belly is white or yellowish. This snake does not have the stripe across the eye like some of the other bronzebacks. The top of the head is brown – bronze color as is the top of this snake’s back.

The eye is large, like a rat snake, and the head is long almost like a whip snake, but wider in comparison to the body. Unlike other bronzebacks, the vertebral scales are not enlarged but are narrow in shape. Its lower cheeks and lips are pale yellow with small black marks or stripes running vertically near the snout.

Striped Bronzeback Scientific Classification:

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Dendrelaphis
Species: D. caudolineatus

Dendrelaphis caudolineatus
(Discovered by Gray in the year 1834)

Striped Bronzeback Snake Video: