Surinam Horned Frog

Geographical Origin and Habitat: Native to the tropical rainforests of the Amazon basin in South America, including Peru, Brazil, Colombia, and Ecuador. This terrestrial species resides in the dense, moist leaf litter of the forest floor, frequently burying itself near slow-moving water sources.

Taxonomy and Genetics: A member of the Ceratophryidae family. It is a large, heavily built frog with a massive mouth that makes up half of its body. It is distinguished by highly prominent, pointed skin protrusions (horns) above its eyes, which are more developed than in Ceratophrys cranwelli.

Behavior and Habits: A classic sit-and-wait ambush predator, remaining buried in leaf litter with only its eyes and horns exposed. They do not climb or jump actively, relying on camouflage to catch prey. They are highly territorial and exhibit extreme aggression toward other frogs.

Morphology: Females are much larger and heavier, reaching up to 15 cm in length, with rounder bodies. Males are smaller, typically 8-10 cm, develop dark pigmentation on their throats, and have nuptial pads on their inner fingers.

Terrarium Setup: Requires a horizontal terrestrial terrarium (minimum 60x45x30 cm). The substrate is crucial and must consist of a thick layer (10-15 cm) of damp organic soil or peat moss mixed with leaf litter to allow burrowing. Provide a shallow water dish; they are poor swimmers and can easily drown.

Lighting and Heating: Requires warm tropical temperatures between 26 and 28°C during the day. Do not use under-tank heating mats, as burrowing frogs will cook; instead, place heat mats on the sides of the enclosure. Provide 12 hours of light with a 5% UVB source.

Humidity and Hydration: Maintain high humidity levels (70-85%). Unlike Ceratophrys cranwelli, the Amazonian Horned Frog does not tolerate dry periods and requires constant moisture. Mist daily with declorinated water. Proper ventilation is necessary to prevent skin rot.

Feeding and Supplementation: Voracious predators. Feed on crickets, roaches, earthworms, and occasionally mice or fish. In the wild, they specialize in preying on other amphibians. Food should be dusted with calcium and vitamin D3 supplements three times a week.

Compatibility: Strictly solitary. They are highly cannibalistic and will consume any other frog, including their own species, even if they are of similar size. They must always be housed individually.

Health and Common Diseases: Susceptible to bacterial infections (red leg syndrome) and toxicosis if the substrate is allowed to accumulate waste and ammonia. Never handle them with bare hands as skin oils and soap residues are toxic. They have bony odontoid projections in their mouth and can deliver painful bites.