Hoplobatrachus crassus
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~40% in a week ~70%
Hoplobatrachus crassus, also called Jerdon's bullfrog, Jerdon's bull frog, and South Indian bullfrog, is a species of frog found widely distributed on the plains of India, Bangladesh, Nepal, and Sri Lanka. Its range may extend to the adjacent Bhutan and Myanmar.
This species has a shovel shaped metatarsal tubercle and has longer hind legs than the somewhat similar H. tigrinus with which it overlaps in part of its range. When the leg is stretched along the body the tibio-tarsal (ankle) joint lies at a position between the ear and eye. Females are slightly larger than males (about 8–10 cm or more while males are about 5–8 cm). The skin of the dorsum is olive green to yellow in color with brown or black spots. Some individuals have a yellow stripe down the spine.
Hoplobatrachus crassus is a terrestrial frog that lives in seasonally flooded dry grasslands, open plains and arid areas, also in cultivated areas and near human settlements. Adult frogs are often found in burrows. They may aestivate during dry periods. Breeding takes place in water. Males have two vocal sacs on the side and the call sounds somewhat like a bleating goat. The calls last... Wikipedia →
Recording0:28
India · 2025
© Aditya Satish · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Horton Plains National Park | 🇱🇰 Sri Lanka | |
| 2 | Minneriya National Park | 🇱🇰 Sri Lanka |
With luck
About 10% of wildlife watchers report a Jerdon's Bullfrog sighting in Minneriya National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 10th most-seen of the 10 amphibians we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
March and December
In those months about 30% of wildlife watchers report a Jerdon's Bullfrog in Minneriya National Park on a given day, against under 5% in February, April–July and September–November, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Jerdon's Bullfrog sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Jerdon's Bullfrog sightings, Minneriya National Park ranks 2nd at about 10%. The best odds are in Horton Plains National Park (Sri Lanka, about 30%).
Same family: Dicroglossidae
The closest relatives of the Jerdon's Bullfrog that you can see in Minneriya National Park (family Dicroglossidae, Fork-tongued Frogs) are Common skittering frog (about 30%), Common Paddy Field Frog (about 20%) and Indian Five-Fingered Frog (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Jerdon's Bullfrog is recorded against all the amphibians logged in Minneriya 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.
