Boiga jaspidea
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~40% in a week ~70%
Boiga jaspidea, commonly known as the jasper cat snake, is a species of rear-fanged colubrid that is uncommon throughout its range. Its small and slender body is reddish to chocolate brown, but rich black and white speckles cover the entire body except for the ventrals, which are yellow. In addition, there are faint black lateral bars, and white spots on the ventrolateral area. Its maximum length is 1.5 m (4.9 feet).
Indonesia, Borneo, Peninsular Malaysia, Thailand and southern Vietnam. The jasper cat snake lives in arboreal habitats in tropical forests, and sometimes among low-lying shrubs. It has been reported to lay up to three eggs in termite nests. Little else is known about this elusive snake.
The jasper cat snake feeds on geckos and other smaller snakes in the wild. Gernot Vogel's Boiga species checklist Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kinabalu Park | 🇲🇾 Malaysia | |
| 2 | Khao Sok National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Jasper Cat Snake sighting in Khao Sok National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 36th most-seen of the 44 reptiles we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
January, March and August
In those months about 30% of wildlife watchers report a Jasper Cat Snake in Khao Sok National Park on a given day, against under 5% in February, April–July, September and November–December, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Jasper Cat Snake sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 2
Of the 2 parks where we can rate Jasper Cat Snake sightings, Khao Sok National Park ranks 2nd at about 10%. The best odds are in Kinabalu Park (Malaysia, about 20%).
Same genus: Boiga
The closest relatives of the Jasper Cat Snake that you can see in Khao Sok National Park (genus Boiga, Australasian Cat Snakes) are Western Mangrove Cat Snake (about 50%), Green Cat Snake (about 20%) and White-spotted Cat Snake (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Jasper Cat Snake is recorded against all the reptiles logged in Khao Sok National Park (7 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.
