Tag Archives: venomous snake

Brown-Spotted Green Pit Viper – Venomous – Mildly Dangerous

Brown Spotted Green Viper in southern Thailand. Cryptelytrops venustus.
Trimeresurus venustus. Brown-Spotted Green Viper. Small – 70 cm. Venomous. Mildly Dangerous. Found in Southern Thailand.

Trimeresurus venustus previously Cryptelytrops venustus(Brown-spotted Green Pit Viper, Beautiful Pit Viper)

Length: average 40-70 cm

Range: Chumpon to Krabi Province in Thailand. I have found them in Krabi and Surat Thani provinces.

Notes: I found this one in the picture on a small hill at a Buddhist temple on a hill next to some steps. These venomous snakes are active on the ground and in bushes. This one was in a bush about 1.3 meters high, right next to the path. It was non-aggressive and didn’t protest when I moved it away from the path with a stick.

Appearance: Small vipers with brilliant greens, whites, and browns. Dorsal scales are strongly keeled. Dorsal scale count 21 – 21 – 15.

Habitat:  I’ve found these vipers up to 300 meters elevation. This snake hunts almost entirely on the ground where it preys on frogs and lizards. They also enjoy jungle, limestone mountains, and rubber plantations. I kept one of these for three days to photograph and shoot video of. It spends most time suspended from a branch just a few inches off the bottom of the tank.

Active Time? The snake is mainly nocturnal. Active during the day only after heavy rainfall. I have found most of mine during daylight hours, but have also found them at night hunting prey.

Food: Mice, frogs, lizards. I had a good sized house gecko in the tank with this Trimeresurus venustus, but it left it alone. The pit vipers sense the heat of the animal and strike. The geckos are cold blooded so they are no hotter than their surroundings.

Trimeresurus venustus, the brown-spotted pit viper, aka: beautiful pit viper from Southern Thailand is one of the true vipers and is venomous but has not been shown to be deadly.

Defensive Behavior: The snake is very slow during the day and only bites if seriously aggravated. I ran into a reptile poacher in a Thailand forest and he was hand carrying one of these brown spotted green pit vipers in his left hand and had a large box turtle in his other hand. I told him – PIT! It means ‘venomous’ in Thai. He insisted “no, it wasn’t” and held it up to his face where the snake immediately bit him on the cheek a couple times and once on the lip. It let go after 1-2 seconds. He said – “See??” I promptly bought the snake from him, to keep him from further harm. Not sure what hospital he was at that night!

Venom Toxicity: Mildly toxic. Bites are painful and usually without significant effects. Probably this viper would need to bite down for a number of seconds to transfer enough volume of venom that it would be seriously detrimental, but they are fully capable of doing so. Bites are to be considered potentially deadly. Green Pit Viper Antivenin is available at most public hospitals in Thailand.

Antivenom Code: SAsTRC01
Antivenom Name: Green Pit Viper Antivenin
Manufacturer: Science Division, Thai Red Cross Society
Phone: +66-2-252-0161 (up to 0164)
Address: Queen Saovabha Memorial Institute, 1871 Rama IV Road, Pathumwan, Bangkok 10330
Country: Thailand

Offspring: The beautiful pit viper I have now is likely gravid, which contradicts some other info I’ve seen about them having offspring in the June/July time-frame. This is December. She is not overly gravid and looks to be in the beginning stages, but still – I think only a couple of months are required for gestation. She’ll have an early birth – April maybe? These snakes birth live offspring in a jelly-like bubble that breaks after coming out of the female snake. Typical numbers are 20-30 young that are colored and patterned same as the adults.


Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotilinae
Species: Trimeresurus venustus

I could find little information about this snake beyond my own experience and some of the snake identification books I have.

King Cobra – Largest Venomous Snake in World

Thailand King Cobra, Ophiophagus hannah, is the world's largest venomous snake, and is found across most of Southeast Asia, including this one found in Thailand.
Ophiophagus hannah. Venomous and potentially deadly. Grows to around to 6-meters. Eats other snakes primarily. If bitten, victim may die within 10-20 minutes.

Ophiophagus hannah (Thailand King Cobra)

Thais say: In Thai language, it sounds like Ngoo how chang (literally “snake cobra elephant”, or ngoo chong ahng. There are many names for this snake.

Length: Max length about 5.85 meters. The presenter at the Saovabha Snake Farm in Bangkok said the largest king was caught in Nakhon si Thammarat in Thailand’s south, near Surat Thani province and it was 19 feet 2 inches in length.

Range: All over Thailand and most of Southeast Asia.

Notes: I’ve seen a few king cobras in the wild. One I saw in a park in Krabi – just the tail as it crossed the road behind me. I’m guessing it was an eight meter long snake. I know it is probably impossible, but I’m not joking. The tail was absolutely massive, longer and thicker by nearly double that of other 5-meter kings I’ve seen many of. This was quite possibly the biggest King Cobra in the world.

Another king I saw on the island of Penang, in Malaysia. I was coming  down a very steep hill and I saw this 3-4 meter king cruising through the dense underbrush. It was absolutely awesome to see it there when there were so many people climbing the hill close by.

Another time I saw a king about one-hundred twenty meters in elevation up a limestone mountain in Krabi province. This one rested on the steps of a popular temple – Wat Tham Seua and I had to move it away so people could come down the steps. A large four-meter long king that was very fast! Note to self – don’t try to move a king that is higher than you are (it was on steps up ahead of me and was very fast to come down to attempt to strike at me because it had the height advantage.

Kings are all over Thailand and can be found near houses, or really – just about anywhere. But they are not found often. They are tremendously strong and smart animals. Please give the snake a large space and do not poke it with a stick. They are very fast moving. Juvenile king cobras can also kill you. Their venom is every bit as toxic as adults. One study done by the Queen Saovabha Memorial Institute in Bangkok showed that king venom is actually more toxic the younger the snake is.

Habitat: Like many types of habitat. Dense forest near water and open grasslands.  Love bamboo thickets for a nest. Ideal cover is a web of small bamboo growing about a meter high with soft bamboo leaves underneath. The King I found last night was up a limestone mountain around 100 meters elevation. In Thailand they are often found wherever rat snakes might be found because they seem to prefer them.

Kings seem to prefer mountains. The other two I found were also at some elevation (200 m and around 500 meters). King cobras are usually terrestrial, but have been found many times in trees.

Another interesting bit of information is that the king cobra is said to be able to see as far as 100 meters during daylight.

Active Time? The snake is mainly diurnal – found active during the daytime, but can also be active also at night.

Food: King cobras eat other smaller snakes primarily, but also will eat monitor lizards. Occasionally they’ll eat other king cobras, pythons, lizards, birds, rodents. I saw a 5-meter long king attempting to eat a 2.5 meter reticulated python. The King appeared intimidated by the strength of the python – it’s no pushover. Here is a photo of a 3 meter king eating a 2 meter red tailed racer snake.

King Cobra Eats Red Tailed Racer Snake - Thailand

Defensive Behavior: Lifts its head off the ground sometimes by as much as 4-5 feet, and flattens out the neck. The hood of a King cobra doesn’t flare as wide… but, a big King will scare you much more because they can be 5 times as long as the monocled or other cobras! These snakes are not usually that afraid of people, and move slowly to ‘escape’ if they move away at all. Last night I moved a 4 meter king off some steps at a local temple so people could pass. It was not in ANY hurry to get away, and it came at me a couple of times. Impressive snakes, and not to be taken lightly. I know a man personally, his brother was bitten on the upper arm/shoulder and died in less than 10 minutes on the way to hospital.

King cobra skull showing large teeth and thick, rather short fangs for injecting venom during envenomation.
King cobra skull showing large teeth and thick, rather short fangs for injecting venom during envenomation.

Venom Toxicity: Very toxic, but monocled cobras (Naja kaouthia) and kraits (genus Bungarus) are more potent on the LD50 scale. The power of the King is in the volume of venom it can inject in one bite – maximum around 7ml! Kings can (and have) killed elephants with a good bite.

Antivenom: There is a specific antivenin for the king cobras manufactured by the Red Cross Queen Saovabha Memorial Institute in Bangkok, Thailand and available online for about $110 (May, 2015) for enough antivenin to counteract .8ml of king cobra venom. If the hospital you’re in does not have it in stock and cannot order it quickly from another nearby source, there is an alternative. Tiger snake antivenin can also work well. Online – Snake-Antivenin.com (no affiliation).

Offspring: Ophiophagus hannah is the only snake known in the world that creates a nest (usually of bamboo and other leaves). This snake lays eggs which they stay with in the nest until ready to hatch. When the eggs begin hatching, the female king leaves because it eats other snakes primarily – and would likely eat the young. The young are fast, and deadly from the time they hatch. Juvenile king cobras from Thailand have yellow bands across their black bodies and heads. They look radically different from adult king cobra snakes. There is a danger of mistaking them for mangrove cat snakes (Boiga melanota dendrophila).

Young king cobras spend their early months, and possibly years in the trees.


Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Elapidae
Genus: Ophiophagus
Species: O. hannah

Three King Cobras in Thailand
Notice the light band across the back of the mid-body (right) ? Until the King flares his hood you can tell it’s a king by those bands. In addition, the head is very distinctive, and large compared to any other snake except a Python.

The kings in these photos are all beat up from bashing their faces against the cages at a snake show in Thailand. In the wild they are so beautiful… majestic, amazing snakes. I was so glad to see my first one  in the wild. Even better to interact with it. Gotta love Thailand!

Video of a King Cobra breathing – you can hear it:

Update 5/23/2015 – I’ve seen a number of king cobras in the wild now over the years. Four of them have been hundreds of meters high on mountains. Many snake enthusiasts want to come to Thailand to see king cobras, and I have to tell them… the chance of seeing one is slight. I’ve lived in Thailand for ten years and I’ve seen only a handful, and I’m in the rainforest often. Your best bet is to come to the country and stay for a couple of months. Stay at PhanomBenchaMountainResort.com in a bungalow, and hike during the days around there. That’s my best advice.

Thais are a bit crazy about cobras – it is the most easily recognized snake, and though I have met few people that can identify other snakes, most know what a cobra looks like. There are even amulet necklaces of cobras!

More king cobra information and research here.


Mangrove Pit Viper – Venomous – Dangerous

Mangrove pit viper in mangrove trees in Krabi province, Thailand.
Mangrove Pit Viper – Dangerous – Bite Frequently. Photo courtesy of Carlton Wagner and Michael Miller, used with permission.
Mangrove Pit Viper - Thailand
Not found near homes much – but, here is one…

Trimeresurus purpureomaculatus (Mangrove Pit Viper, also known as mangrove viper, shore pit viper, Gray’s pit viper, purple-spotted pit viper, and shore pit viper. In past (2004-2011) was called Cryptelytrops purpureomaculatus.

Thais Say: Ngoo pang ka

Length: Males grow to about 60 cm and females to 90 cm on average.

Habitat: Usually near water and very wet areas like mangroves along the ocean or brackish water. However, recently one was found on a sidewalk by a bungalow on the island of Koh Phi Phi in Krabi province, Thailand. They like stream banks with good cover – low lying plants that they can hide under. They also may like hilly habitat and have been found as high as 2,000 meters elevation in bamboo jungles. These snakes are found in high numbers on islands around Thailand. I have found this species in some abundance along the shore in mangroves in Krabi province.

Behavior: Diurnal and arboreal. These snakes are very easily agitated, and once they get going they are hard to calm down. Their strikes are very fast, but have a short reach. These are known by snake handlers to have a “bad temper”.

These Thailand vipers can have many color variations. They are usually like the photo above – greyish with a bit of purple in the coloring. Some are very purple. We’ve also seen a brownish toned mangrove pit viper with some yellow highlights. Now for our top photo we have a greenish toned viper. Obviously – color is highly variable in this species.

Venom toxicity: Venomous and very toxic to humans. Though people have died as a result of bites from this snake, this is not usually the case. Symptoms – pain, severe swelling, bruising, blistering, and possible necrosis.

Here is a study of treating a bite by this snake with T. albolabris antivenom from the Queen Saovabha Memorial Institute with some success.

Treatment: Antivenin.

Antivenom Name – Green Pit Viper Antivenin (Code – SAsTRC01)
Manufacturer: Thai Red Cross Society
Phone: +66-2-252-0161, 0162, 0163, 0164
Queen Saovabha Memorial Institute
1871 Rama IV Road, Pathumwan, Bangkok 10330 Thailand

Trimeresurus purpureomaculatus

Scientific classification

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotalinae
Genus: Trimeresurus
Species: T. purpureomaculatus

Classified as – Trimeresurus purpureomaculatus by Gray in year 1832.

Mangrove pit viper photo courtesy of, and full copyright by – Richard Richert.

Thanks Richard!