Acanthosaura crucigera
Silhouette: Michael Scroggie · PhyloPic
In 3 days ~60% in a week ~90%
Acanthosaura crucigera (Thai: กิ้งก่าเขาหนามสั้น) is a species of lizard commonly known as the masked spiny lizard, Boulenger's pricklenape, or masked horned tree lizard. They are found in Myanmar, Thailand, Peninsular Malaysia, and Cambodia.
They have a distinct diamond-shaped black mark on the upper side of the neck and measure about 25 cm (9.8 in) in total, snout to tip of the tail. Flickr photo by Dave, Kaeng Krachan National Park - Thailand Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kaeng Krachan National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Boulenger's Pricklenape sighting in Kaeng Krachan National Park on a given day, based on 53 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 56 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June and October–November
In those months about 40% of wildlife watchers report a Boulenger's Pricklenape in Kaeng Krachan National Park on a given day, against under 5% in February, the lowest month.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Boulenger's Pricklenape 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.
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 Boulenger's Pricklenape sightings: about 20% of wildlife watchers there report one on a given day.
Same family: Agamidae
The closest relatives of the Boulenger's Pricklenape that you can see in Kaeng Krachan National Park (family Agamidae, Dragons) are Emma Gray's Forest Lizard (about 40%), Burmese Green Crested Lizard (about 10%) and Barred Flying Dragon (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Boulenger's Pricklenape is recorded against all the reptiles logged in Kaeng Krachan National Park (53 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.
