Ceratophrys cornuta
Silhouette: Margot Michaud · PhyloPic
In 3 days ~70% in a week >90%
The Surinam horned frog (Ceratophrys cornuta), also known as Amazonian horned frog, is a bulky frog measuring up to 20 centimetres (7.9 in) found in the northern part of South America. It has an exceptionally wide mouth, and has horn-like projections above its eyes. Females lay up to 1,000 eggs at a time, and wrap them around aquatic plants. The frog eats other frogs, fish, lizards, and mice. Tadpoles of the Surinam horned frog attack each other (and tadpoles from other species) soon after being hatched.
This species was once considered the same species as Ceratophrys ornata. This dispute was later settled because the Surinam Horned frog inhabits a different habitat than its smaller cousin and does not interbreed with it in the wild (but will do so in captivity). This species has been known to prey upon the other species of horned frog, especially the northern race of Ceratophrys ornata.
Enrique La Marca, Luis A. Coloma, Santiago Ron, Claudia Azevedo-Ramos (2004). "Ceratophrys cornuta". IUCN Red List of Threatened Species. 2004 e.T56337A11464093. doi:10.2305/IUCN.UK.2004.RLTS.T56337A11464093.en. Retrieved 12 November 2021.{{cite journal}}: CS1 maint... Wikipedia →
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French Guiana · 2023
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French Guiana · 2025
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Suriname · 2025
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| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru | |
| 2 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 3 | Manu National Park | 🇵🇪 Peru | |
| 4 | Yasuní National Park | 🇪🇨 Ecuador |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Barcelona Zoo | 🇪🇸 Spain | |
| 2 | Oceanarium in Saint Petersburg | 🇷🇺 Russia | |
| 3 | Greensboro Science Center | 🇺🇸 United States | |
| 4 | Louisville Zoo | 🇺🇸 United States | |
| 5 | Aquarama Barcelona | 🇪🇸 Spain | |
| 6 | Vancouver Aquarium | 🇨🇦 Canada | |
| 7 | Xpark | 🇹🇼 Taiwan | |
| 8 | Awashima Marine Park | 🇯🇵 Japan |
Likely
About 40% of wildlife watchers report a Surinam Horned Frog sighting in Manu National Park on a given day, based on 81 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 67 amphibians we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
January and February
In those months about 50% of wildlife watchers report a Surinam Horned Frog in Manu National Park on a given day, against about 10% in July and August, the lowest months. Those are among Manu National Park's wettest months, with about 260 mm of rain a month against 60 mm in August.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Surinam Horned Frog sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 4 parks where we can rate Surinam Horned Frog sightings, Manu National Park ranks 3rd at about 40%, level with the leaders once rounded. The best odds are in Tambopata National Reserve (Peru, about 40%) and Brownsberg Nature Park (Suriname, about 40%).
Same order: Anura
The closest relatives of the Surinam Horned Frog that you can see in Manu National Park (order Anura, Frogs and Toads) are Eastern Cane Toad (about 60%), White-lined Leaf Frog (about 40%) and Amazon Sheep Frog (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Surinam Horned Frog is recorded against all the amphibians logged in Manu National Park (81 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.
