Tropidolaemus subannulatus
Silhouette: Steven Traver · PhyloPic
In 3 days >90%
The Bornean keeled green pit viper or North Philippine temple pit viper (Tropidolaemus subannulatus) is a pit viper species native to Brunei, Indonesia, Malaysia, and the Philippines. Until 2007, this species was considered part of the Tropidolaemus wagleri species complex.
The Borneo Keeled Green Pit Viper can have a range of colors but generally it is bright green with numerous thin crossbands. Some localities have a mixture of light green to blue background colors. The bands are variable and can be a combination of blue, red or white. Females may have blue or red dots on their underbelly, while juveniles and males only have red dots. Females are much larger than males and can grow to a maximum size of 96 cm, while males can reach a size of 46 cm. This species is one of the most common species encountered in the lowland rainforests of Borneo. It is known to eat birds, small mammals and frogs. It is ovoviparous and gives birth to live young.
This species is arboreal, with a prehensile tail. It can be found in low level vegetation up to a height of 20m. Like many other arboreal snakes, this species has a disrupted green color to allow it excellent camouflage in the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bako National Park | 🇲🇾 Malaysia | |
| 2 | Sepilok | 🇲🇾 Malaysia | |
| 3 | Tanjung Puting National Park | 🇮🇩 Indonesia | |
| 4 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 5 | Kinabalu Park | 🇲🇾 Malaysia | |
| 6 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Moscow Zoo | 🇷🇺 Russia | |
| 2 | Aquarium of the Pacific | 🇺🇸 United States | |
| 3 | Bali Bird Park | 🇮🇩 Indonesia |
Very likely
About 80% of wildlife watchers report a North Philippine Temple Pitviper sighting in Sepilok on a given day, based on 349 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the most-seen of the 34 reptiles we can rate there. Over three days the chance rises to over 90%, if each day is a fresh chance.
February, April–August and October–December
In those months about 80% of wildlife watchers report a North Philippine Temple Pitviper in Sepilok on a given day, against about 70% in January, March and September, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most North Philippine Temple Pitviper sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
2nd of 6
Of the 6 parks where we can rate North Philippine Temple Pitviper sightings, Sepilok ranks 2nd at about 80%. The best odds are in Bako National Park (Malaysia, about 90%). All parks ranked.
GBIF citizen-science records
It is estimated from how often the North Philippine Temple Pitviper is recorded against all the reptiles logged in Sepilok (349 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
