This burrowing frog survives dry seasons by hiding underground and inflating its own body.

Nature · Published 3 October 2026 Swipe more like this →

In short: The banded bullfrog, often sold as the chubby frog, is a master of survival. Native to Southeast Asia, this stocky amphibian spends dry periods buried beneath the soil. When threatened, it employs a dramatic defense: inflating its lungs to appear larger while secreting a noxious, defensive substance through its skin.

The banded bullfrog, Kaloula pulchra, is a resilient species within the narrow-mouthed frog family. First described by zoologist John Edward Gray in 1831, the frog is native to a vast range across Southeast Asia, spanning from India and Nepal to southern China. Its success is largely attributed to its specialized anatomy; unlike many frogs that rely on jumping, the banded bullfrog is built for walking and burrowing. It digs hindlimb-first into the earth, where it can remain safely tucked away during harsh, dry conditions.

Breeding is triggered by the arrival of monsoon rains. During these periods, the frogs emerge to congregate in pools, where males produce distinct calls to attract mates. Their diet in the wild consists primarily of ants and termites, though they are opportunistic feeders that also consume other small invertebrates. Because of their relatively small mouths, they are limited to prey that is slow-moving and small in size. When hunting, their feeding cycle is remarkably fast, taking only about 150 milliseconds to capture their meal.

Beyond its natural habitat, the species has become a global traveler, often hitching rides via maritime transport or the international pet trade. While it has successfully established populations in places like Singapore, Borneo, and the Philippines, it has also faced challenges in other regions. For instance, while specimens were spotted in Florida in 2006 and 2008, no self-sustaining population was found. Despite its status as a potential invasive species, the International Union for Conservation of Nature lists it as of least concern, citing its wide distribution and ability to thrive in diverse environments, from dense forests to urban landscapes.

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