Boiga siamensis
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~40%
The gray cat snake (Boiga siamensis), also known as eyed cat snake or Siamese cat snake is a species of catsnake found in northeastern India, Bangladesh, Myanmar, Cambodia, Thailand, Malaysia, Vietnam. and Nepal The Siamese cat snake resembles the dog-toothed snake but it occupies a different geographical range. It is a large snake, reaching almost 2 m (6 1⁄2 ft) in total length. Colours are greyish-brown with black crossbars that are most distinct interiorly. The head is dark brown with a dark streak from behind the eye to the first body crossbar that is broken just beyond the last supralabial. The chin and throat are white, the ventrals white to light brown
Mostly nocturnal, it is a potentially aggressive snake. It is a rear fanged venom snake but there are not known casualties registered. It is found in India, Bangladesh, Myanmar, Cambodia, Thailand, Nepal, Malaysia, and Vietnam. It is also found in Laos.
These snakes are found in forest-hills and plains and can be found up to 1,700 m (5,577 ft.). They are arboreal but can be found near water too. This snake feeds on, birds, and eggs.... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kaeng Krachan National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Eyed Cat Snake sighting in Kaeng Krachan National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 51st most-seen of the 56 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April–May, July and December
In those months about 10% of wildlife watchers report an Eyed Cat Snake in Kaeng Krachan National Park on a given day, against under 5% in January–March, June and August–November, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Eyed Cat Snake sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Kaeng Krachan National Park, in our data
Kaeng Krachan National Park is the only park on Wallace's Line with enough records to rate Eyed Cat Snake sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Eyed Cat Snake is recorded against all the reptiles logged in Kaeng Krachan National Park (5 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.
