Tag Archives: Non-venomous

Red Tailed Racer – Non-Venomous – Not Dangerous

Red Tailed Racer Snake, Thailand
Red Tailed Racer – Non-Venomous – Not Dangerous

[Last Updated: 5 May 2017]

These Red Tailed Racers are beautiful green snakes (งูเขียว) with a grey or reddish tail. They are non-venomous but big enough to give you a strong bite. These snakes live for about 15 years on average – if they don’t encounter a predator like the King cobra.

Gonyosoma oxycephalum (Red Tailed Racer)

Thai: (ngoo kee-ow kub maak)

Length: Max length about 2.5m (7.5+ feet) They are thick like your wrist and very strong, muscled snakes.

Range: All over Thailand.

Habitat: Red Tailed Racers prefer lowland and up to about 750m above sea level in jungle, agricultural (farmed) land, mangrove forests. They spend most of their time in trees and bushes.

Notes: These are common tree snakes that are also found in caves. They have beautiful greens, with white and black mixed in to their main body color. Their belly scales are rough and ideal for climbing trees. Their top scales are smooth. Identified easily by the dark streak across the eyes, and, if you’re close enough – the blue tongue that flickers in and out when aggravated. The tail is not always or even usually red… the ones I’ve seen are grey. They don’t always do well in captivity and can strike at anytime, though usually much more when aggravated first.

Active Time? Daytime.

Food: Rats, mice, birds, bats and lizards.

Natural Enemies: King cobras love to eat Red Tailed Racer snakes!

Defensive Behavior: They flare up their body vertically – not horizontally like the cobras. They puff themselves up vertically and turn this part sideways to you so they can strike fear into you. They do bite when pestered. They can strike from nearly any position, head facing away from you too. Be careful they have strong jaws.

Venom Toxicity: No venom dangerous to humans.

Offspring: Red tailed racers reach sexually maturity at 4 years. Between September and January this snake deposits small clutches of 3-8 eggs that hatch 45cm long baby red tailed racer snakes in 91 to 112 days.

Red Tailed Racer Snake, Non-Venomous, Thailand
We put this snake on the ground to get a full-body shot, usually it would not be on the ground – they much prefer the trees and bushes.

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Gonyosoma
Species: G. oxycephalum

Binomial name: Gonyosoma oxycephalum

Classified by Boie in 1827.

Video: Big Red-Tailed Racer Found on Hiking Trail – Southern Thailand

#GreenSnake #งูเขียว

Ridley’s Racer – Cave Snake – Not Venomous

Cave snake - Ridleys Racer - Othriophis taeniurus ridleyi - Thailand
Othriophis taeniurus ridleyi. Ridleys Racer. Non-venomous. Lives in caves, eats bats.

Othriophis taeniurus ridleyi (Ridley’s Racer)

Length: up to 2.5 meters. I have caught eight of these, all of them under 2.25 meters.

Range: Chumpon, Thailand, south to border of Thailand-Malaysia

Habitat: Usually caves, though at times found outside caves. Recently I found a number of them in a bungalow at a nature resort and an empty wooden cabin in a rubber plantation. Then someone wrote me to ID one that was climbing around the limestone cliffs in Krabi.

Active Time? The snake is mainly nocturnal. They are active during the day only after heavy rainfall, or inside caves.

Food: Bats, birds, and maybe even rats if they happened to be on the ground.

Defensive Behavior: These Thailand snakes are calm and move slowly unless provoked substantially.

Venom Toxicity: None. Member of rat snake group – so their saliva probably contains venom, but they have no venom injecting fangs in the front or rear. They have rows of teeth in the upper jaw, but very small – less than 1/4th inch long.

Offspring: Nothing known – still updating this article.

Notes: These are often found in Thailand caves, they are excellent wall climbers. A Buddhist monk walked me through some pitch black caves at a temple with a cave in Southern Thailand and showed me this amazingly colored Ridley’s Racer pictured above. This non-venomous snake, part of the rat snake family was calm and let me take video with the camera just 12 inches from her head. Ridley racer snakes hang on cave walls and snatch flying bats out of the air.

Classification:

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Othriophis
Species: taeniurus ridleyi

Ridley’s Racer Video:

Here is another video taken by a visitor from France that was climbing a mountain at a local Buddhist temple and saw this snake during the daytime cruising the limestone rocks: