Why Do Some Frogs Scream Instead of Croak?

3 min readNew DelhiMar 13, 2026 06:01 PM Most of us are familiar with the rhythmic croaks of frogs, especially during monsoon evenings or near freshwater bodies. But did you know frogs can scream, and sometimes quite loudly? While it may sound like something out of a horror movie, the phenomenon of screaming frogs is real, rare, and deeply fascinating.
According to documented studies and herpetological research, frogs scream as a defensive mechanism. When startled, grabbed, or attacked a predator, some frog species emit a loud, high-pitched scream to startle the attacker or alert near animals.
In a 2022 article in Scientific American, experts confirm that these screams are not typical communication calls, such as mating or territorial croaks. Instead, it’s an involuntary stress response, often accompanied wide eyes and an inflated body posture, a last-ditch effort to scare off a predator or attract the attention of a larger animal that might interrupt the attack.
Which frogs are known to scream?
Several species across different continents exhibit this screaming behaviour:
The goal is to surprise the predator long enough to escape (Source: Freepik)
Desert Rain Frog (Breviceps macrops): This small, round frog from Namibia is perhaps the most viral screamer, thanks to its comically loud squeaks that resemble dog toys. It gained internet fame with a popular video showing it inflating and squeaking as a defence.
Common Tree Frog (Polypedates leucomystax): Native to Southeast Asia, this species can emit a surprisingly loud scream when threatened.
American Bullfrog (Lithobates catesbeianus): While known for its deep calls, this frog can also let out dress vocalisations that resemble shrieks when captured.Story continues below this ad
Amazonian Frogs: Some frogs in the Amazon rainforest have been reported to scream when birds or snakes attempt to snatch them up, according to researchers from Brazil’s Instituto Nacional de Pesquisas da Amazônia.
The frog scream varies between species. Some sound like shrill screeches, others like prolonged squeals or gasps. Unlike their melodic mating calls, screaming is usually jarring, sudden, and short-lived.
According to herpetolog Dr David Blackburn from the Florida Museum of Natural Hory, these screams are not musical; they’re meant to be disorienting. If you were a snake holding something that suddenly screamed, you might let go.
The goal is to surprise the predator long enough to escape. In others, it might attract larger predators that can disrupt the attacker. While it doesn’t guarantee safety, it offers a fighting chance.Story continues below this ad
While frogs are vocal animals, only a limited number of species are known to scream, and even fewer have been studied in detail. It’s a behaviour that scients are still investigating.