Odorrana hosii
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~70% in a week ~90%
Hose's frog (Odorrana hosii, often misspelled as O. hosei) is a true frog species with a wide range in Southeast Asia. This species was named after zoologist Charles Hose. Its closest living relatives appear to be O. chloronota which occurs to the north of Hose's frog's range, as well as O. livida and O. morafkai with a more limited range in Myanmar and Vietnam, respectively; these four appear to form a close-knit group wherein the northern species are barely closer to each other than Hose's frog is to any of them. Also quite closely related is O. megatympanum, another Vietnamese endemic.
This frog has a robust body with long, slender legs; males measure 50–60 mm, females 85–100 mm. The dorsal are dark green with brown sides, the ventral are pale, the limbs are marked with dark crossbars. Its finger- and toe-tips bear grooved discs.
This frog also have many varians of dorsal colour. Including full green, full brown, green with brown dots, and brown with green dots. Its call heard like "cit" of rats. Its tadpoles apparently lack suctorial discs. Hose's frog has been recorded from the Malay Peninsula south of the Kra Isthmus, on Phuket... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 2 | Khao Sok National Park | 🇹🇭 Thailand | |
| 3 | Kinabalu Park | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Entopia | 🇲🇾 Malaysia |
Possible
About 30% of wildlife watchers report a Poisonous Rock Frog sighting in Khao Sok National Park on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 21 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.
July
In that month about 50% of wildlife watchers report a Poisonous Rock Frog in Khao Sok National Park on a given day, against about 20% in May and November–December, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Poisonous Rock Frog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 parks where we can rate Poisonous Rock Frog sightings, Khao Sok National Park ranks 2nd at about 30%, level with the leaders once rounded. The best odds are in Gunung Leuser National Park (Indonesia, about 30%).
Same family: Ranidae
The closest relatives of the Poisonous Rock Frog that you can see in Khao Sok National Park (family Ranidae, Typical Frogs) are Northern White-lipped Frog (about 50%), Penelope's Hill Frog (about 40%) and Green Paddy Frog (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Poisonous Rock Frog is recorded against all the amphibians logged in Khao Sok National Park (25 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.
