Asian Common Toad (Duttaphrynus melanostictus) lives in tropical forests across Southeast Asia. It feeds on insects and worms. Its conservation status is Least Concern.
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A real field recording of the Asian Common Toad, made in the wild.
In Madagascar virtually every native animal is vulnerable to the toad's toxin, with only one of 77 species showing any defence. A genetic survey of the Na+/K+-ATPase gene in dozens of potential predators found that all but one lacked resistance, indicating that the toxin could devastate local fauna.
The Asian common toad first arrived in Madagascar in 2011 at the port of Toamasina, and by 2014 it had spread to cover a 100 km² zone around the city. This rapid expansion demonstrates the species' strong invasive potential in new environments. Conservationists fear that, if not eradicated, the toad could cause impacts comparable to those of the cane toad in Australia, threatening native wildlife with its potent bufotoxin.
When Asian common toad tadpoles are raised with their siblings they metamorphose noticeably faster than those kept with unrelated peers. Experiments showed that sibling groups completed metamorphosis sooner, while mixed groups lagged behind. The tadpoles also possess the ability to recognise kin, a trait that likely facilitates this accelerated development. Faster metamorphosis can give sibling-reared individuals a survival edge in temporary water bodies.
Asian common toads become active after dark and frequently gather beneath street lamps, taking advantage of the bright spots that attract swarming winged termites. The illuminated insects provide a concentrated food source, allowing the toads to feed efficiently in urban settings. Outside of these light-lit hunts, adults remain terrestrial, sheltering under rocks, leaf litter or logs and often living close to human habitations.
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As the sun dips below the horizon, the Asian Common Toad stirs, its warty skin glistening with dew as it begins its nocturnal wanderings, its sturdy legs propelling it with a slow, deliberate gait through the underbrush. With eyes that shine like dark jewels, this unassuming creature navigates its world with a quiet confidence, its remarkable ability to thrive in a wide range of habitats a testament to its enduring resilience. As it moves, its deep, resonant calls echo through the night air, a haunting serenade that weaves together the threads of its secret, subterranean life.
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