Hoplobatrachus tigerinus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~60% in a week ~90%
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 30% of wildlife watchers report an Indus Valley Bullfrog sighting in Nagarhole National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 3rd most-seen of the 5 amphibians 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.
July
In that month about 60% of wildlife watchers report an Indus Valley Bullfrog in Nagarhole National Park on a given day, against under 5% in January–April, June and October–November, the lowest months. That is one of Nagarhole National Park's wettest months, with about 270 mm of rain against 10 mm in February.
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.
Only Nagarhole National Park, in our data
Nagarhole National Park is the only park on Wallace's Line with enough records to rate Indus Valley Bullfrog sightings: about 30% of wildlife watchers there report one on a given day.
Same order: Anura
The closest relatives of the Indus Valley Bullfrog that you can see in Nagarhole National Park (order Anura, Frogs and Toads) are Bicolored Frog (about 40%), Common Indian Toad (about 40%) and winged gliding frog (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 Nagarhole National Park (6 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.
