Hoplobatrachus tigerinus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~50% in a week ~80%
Hoplobatrachus tigerinus, commonly known as the Indian bullfrog, is a large species of fork-tongued frog found in South and Southeast Asia. A relatively large frog, it is normally green in color, although physiological traits vary between populations. Sexual dimorphism exists between males and females. Outside of its native range, H. tigerinus is a rapidly-spreading invasive species. Both adults and tadpoles can severely damage the populations of other frog species. Typically, Indian bullfrogs dwell in wetland environments. Research has been conducted on their ability to control mosquitos.
The Indian bulfrog was first described by François-Marie Daudin in 1802, as Rana tigerina. The type locality was given as "Bengale, India". In 1992, it was transferred to the genus Hoplobatrachus by Alain Dubois, as Hoplobatrachus tigerinus. In addition to various other renditions and misspellings of R. tigerina, other synonyms include Rana picta, Dicroglossus tigrinus, and Euphlyctis tigerina.
The Indian bullfrog is a large species of frog. They can grow to be 170 millimetres (6.7 in), with heads generally longer than they are wide, although older individuals tend... Wikipedia →
Distress call0:15
India · 2002
© Olivier SWIFT · XC980950 · CC BY-NC-SA 4.0
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India · 2026
© Agatha Hannah · iNaturalist · CC BY-NC 4.0
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India · 2025
© anilny · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nagarhole National Park | 🇮🇳 India |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report an Indus Valley Bullfrog sighting in Kollam on a given day, based on 22 verified sightings from GBIF citizen-science data. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
May and July
In those months about 40% of wildlife watchers report an Indus Valley Bullfrog in Kollam on a given day, against under 5% in February–March and August–October, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Indus Valley Bullfrog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
8th of 13
Of the 13 cities where we can rate Indus Valley Bullfrog sightings, Kollam ranks 8th at about 20%. The best odds are in Ponnani (India, about 40%), Vasai-Virar (India, about 40%) and Lucknow (India, about 30%).
Same order: Anura
The closest relatives of the Indus Valley Bullfrog that you can see in Kollam (order Anura, Frogs and Toads) are Sri Lankan Bullfrog (about 30%), Chunam Tree Frog (about 30%) and Common Indian Toad (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Indus Valley Bullfrog is recorded against all the amphibians logged in Kollam (22 verified sightings), 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.
