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Smoky Jungle Frog
Leptodactylus pentadactylus
The Smoky Jungle Frog is a gigantic, nocturnal, and highly predatory South American amphibian. A formidable hunter, it is capable of emitting a loud, child-like distress scream when heavily threatened.
Class:Amphibia
Order:Anura
Family:Leptodactylidae
Genus:Leptodactylus
Species:Leptodactylus pentadactylus
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Environment
Terrestrial
Humidity
70 - 90 %
Day temperature
24 - 29 °C
Night temperature
21 - 25 °C
UVB
Low
Species description
Geographical Origin and Habitat: A gigantic terrestrial frog native to the primary tropical rainforests, swamps, and flooded woodlands of Central and South America, ranging from Costa Rica south through the Amazon Basin and Orinoco basin. During the day, it shelters in muddy burrows, under fallen logs, or deep root cavities.
Taxonomy and Genetics: Belonging to the family Leptodactylidae, *Leptodactylus pentadactylus* is one of the largest frogs in the Americas, with adults reaching a snout-to-vent length of 15–20 cm and weighing over 500 grams. Its skin is smooth and highly glandular. The dorsal coloration is a cryptic "smoky" brown, dark mahogany, or reddish-brown, mimicking leaf litter, with dark bands or spots. The head is broad, and the mouth is exceptionally wide.
Behavior and Habits: Strictly nocturnal and highly predatory. During the night, they forage actively on the forest floor, leaping with immense power to capture large prey. When threatened, they are capable of releasing noxious skin secretions and emitting a startling, high-pitched scream that sounds like a human child, designed to deter predators.
Morphology: Sexual dimorphism is highly pronounced. Adult males possess heavily muscled forelimbs and develop large, sharp black keratinous spurs on their thumbs and chest, which they use as weapons in aggressive territorial combats. Females lack these spurs and are generally larger and more robust.
Care, breeding and tankmates
Terrarium Setup: Due to their large size, they require a very spacious horizontal enclosure (minimum 120x60x60 cm). The substrate must be deep (at least 15 cm) and moisture-retaining, such as a mix of organic soil, peat moss, and leaf litter. Provide large hollow cork logs or heavy hiding caves where they can burrow. A very large, shallow water basin is essential, and the water must be changed daily as they produce significant waste.
Lighting and Heating: Keep temperatures between 25–28°C during the day. Avoid temperatures exceeding 30°C, which can cause heat stress and fatal dehydration. A nighttime temperature drop to 22–24°C is recommended. Provide a low-level UVB light (2–5%) to support proper skeletal development and prevent metabolic bone disease.
Humidity and Hydration: Require high relative humidity (80–90%). Efficient ventilation is critical to prevent stagnant, bacteria-friendly conditions. Mist the enclosure heavily each evening with dechlorinated water. Their skin is highly permeable; they cannot tolerate dry substrates.
Feeding and Supplementation: Voracious and powerful carnivores. Their diet should consist of large dubia roaches, locusts, large earthworms, and occasionally appropriately sized rodents (fuzzies or small mice). Feed using long tongs to keep fingers safe from their strong feeding grip. Dust prey items with a high-quality calcium, D3, and multivitamin supplement twice a week.
Compatibility: Strictly solitary. They are highly territorial and cannibalistic; keeping multiple individuals together, especially males, will result in lethal fights and injuries from thumb spurs. Never house them with other species.
Health and Common Diseases: Generally robust but prone to stress-induced skin toxicosis. When threatened, they secrete a toxic, skin-irritating milky fluid from their thighs and emit a piercing, human-like scream. Always handle them with gloves. Strict hygiene and daily spot-cleaning are mandatory to prevent toxic build-up from their large feces.
Geographic Origin and Distribution
A gigantic terrestrial frog native to the primary tropical rainforests, swamps, and flooded woodlands of Central and South America, ranging from Costa Rica south through the Amazon Basin and Orinoco basin. During the day, it shelters in muddy burrows, under fallen logs, or deep root cavities.
Origin
Amazon, Orinoco, and GuianasCentral America and CaribbeanNorth AmericaEast Asia
Amphibian profile
- Diet
- No verified data available
- Life expectancy
- No verified data available
- Adult size
- 18.5 cm
- Lifestyle/Microhabitat
- No verified data available
- Activity cycle
- No verified data available
- Sociality
- No verified data available
- Reproduction
- No verified data available
- Toxicity
- No verified data available
- Life stage
- No verified data available
- Handling tolerance
- No verified data available
- Brumation
- No verified data available
- Molting
- No verified data available
The catalog's scalar value is 18.5 cm. The AmphiBIO v1 source reports a maximum adult measurement of 18.5 cm for this species, recorded as snout–vent length (SVL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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