Crab-eating Frog
About the Crab-eating Frog in Singapore
Last updated 29 May 2026
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The Crab-eating Frog (Fejervarya cancrivora) is a medium-to-large frog common in Singapore's coastal areas, mangroves, and disturbed habitats. They are highly adaptable residents that thrive in environments where most other amphibians cannot survive.
Identifying features
Check out some identifying features of the Crab-eating Frog!
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The Crab-eating Frog is easily recognized by the warty, irregular ridges that run along its back, giving it a rugged appearance, and by its generally mottled, earthy brown coloration that blends seamlessly with muddy natural surroundings.
It features a relatively pointed snout and fully webbed hind feet, unlike the partially webbed hind toes of other field frogs.
The Crab-eating Frog can also be identified through its call. Hear its call here!
Habitat and ecology
Unlike almost all other amphibians, this frog can tolerate brackish water and even temporary immersion in seawater! They are voracious predators that forage in mangrove mudflats, eating small crabs, crustaceans, and insects.
Did you know?
To survive in saltwater habitats that would normally dehydrate an amphibian, the Crab-eating Frog can rapidly increase the amount of urea in its bloodstream, matching the salinity of the surrounding water to prevent fluid loss!
Learn more about the Crab-eating Frog!
Curious about the Crab-eating Frog? Here are some interesting articles you can read to learn more about them.
