Pulchrana glandulosa
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~70% in a week ~90%
Hylarana glandulosa, commonly known as the rough-sided frog or the glandular frog, is a species of true frog in the genus Hylarana. It is native to Brunei Darussalam, Indonesia, Malaysia, Singapore, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical swampland, rivers, freshwater marshes, caves, and plantations. It is not considered threatened by the IUCN.
In Thailand, it is called h̄mā n̂ảm (Thai: หมาน้ำ; literally: water dog) because its call sounds like a barking puppy. Sound recordings of Hylarana glandulosa at BioAcoustica Wikipedia →
Recording0:36
Malaysia · 2025
© ChanSK · iNaturalist · CC BY-NC 4.0
Recording0:16
Malaysia · 2024
© Aster Hii · iNaturalist · CC BY-NC 4.0
Recording0:12
Brunei · 2024
© Amaël Borzée · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sepilok | 🇲🇾 Malaysia | |
| 2 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kuala Lumpur | 🇲🇾 Malaysia |
Possible
About 30% of wildlife watchers report a Rough-sided frog sighting in Sepilok on a given day, based on 54 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 18 amphibians we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
April, July, October and December
In those months about 40% of wildlife watchers report a Rough-sided frog in Sepilok on a given day, against about 10% in March, the lowest month.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Rough-sided frog sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Rough-sided frog sightings, Sepilok has the highest daily chance: about 30%. Next come Kinabatangan Wildlife Sanctuary (Malaysia, about 30%).
Same family: Ranidae
The closest relatives of the Rough-sided frog that you can see in Sepilok (family Ranidae, Typical Frogs) are Green Paddy Frog (about 20%), Copper-cheeked Frog (about 10%) and Large White-lipped Frog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rough-sided frog is recorded against all the amphibians logged in Sepilok (54 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.
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