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The enigmatic snakes of Southeast Asia have developed a remarkable trick to escape predators: instead of slithering, they arch their long bodies and tumble at high speed.
Dwarf reed snakes (Pseudorabdion) achieve this acrobatic feat by keeping their head in a relatively fixed position while rotating the rest of their body, according to a new study published Monday, October 19, in the journal Current biology.
The researchers filmed the snakes from different angles to better understand the mechanics of rolling or wheeling behavior. They found that the snakes were capable of reaching speeds of up to 12.1 feet per second (3.69 meters per second), which is much faster than they can glide (technically called undulating locomotion).
“Rolling allows them to escape danger very quickly”, studies the first author Yosuke Kojimaprofessor in the biology department at Toho University in Japan, told Live Science. “In our study, their maximum forward speed during rolling was on average four times that of normal undulating locomotion.”
Dwarf snakes are secretive, often nocturnal species that live throughout Southeast Asia, where they are prey for birds and other snakes. Although snakes are extremely enigmatic and usually hidden under leaves or other natural objects, people observe from time to time the dazzling rolls of serpents.
In a Study 2023researchers have formally documented rolling behavior for the first time in a species of dwarf snake (P. longiceps), which researchers observed in northwest Malaysia in 2019. Kojima’s team began observing this behavior independently around the same time in the Malaysian state of Sarawak in Borneo.
“I had never seen anything like this before and immediately wanted to know more,” Kojima said.
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For the new study, the researchers filmed rolling behavior repeatedly in three species of dwarf reeds: P. saravacense, P. necklace And P. longiceps — between 2019 and 2022. The team also studied three reed snakes of another genus (Calamari), which did not execute the behavior.
Kojima said his study builds on the 2023 research by quantifying rolling movements, confirming the overall movement pattern described by the research and revealing additional details, including how snakes stabilize their heads.
Snakes aren’t the only ones found in the wild. For example, some desert spiders can ride danger, just like mother of pearl butterfly caterpillars (Rural pleurotya Or Rural Patania). However, snakes are unique in that they seem to have good control over their rolls.
Rolling movements generally destabilize the head and disrupt sensory adjustment, especially at high speeds, according to the authors of the new study. In other words, it is difficult for animals to control their bodies when rolling. The snakes’ technique of keeping their heads relatively fixed and often elevated from the ground likely counters what would otherwise be destabilizing effects.
Pseudorabdion saravacense is one of three species of dwarf reed snakes now known to exhibit rolling behavior.
(Image credit: Yosuke Kojima)
In addition to studying speed and shape, the researchers found that the snakes could move in a relatively straight line, moving easily along a “running track” just 20 centimeters wide. The researchers noted that the snakes often ended their tumbling routine by diving under nearby objects, so they appeared to remain aware of their surroundings.
According to the researchers, rolling is a behavioral innovation that allows snakes to overcome their physical constraints and achieve an otherwise impossible movement.
“Behavioral innovation can give rise to surprising new abilities that one wouldn’t expect from an animal’s appearance alone,” Kojima said.
Researchers hypothesized that this bizarre behavior could surprise and confuse predators, in addition to being a quick means of escape. The authors of the 2023 study also hypothesized that rolling would result in a patchy scent trail, and because king cobras (Ophiophagus) use olfactory cues to locate their prey, which could make it more difficult for predators to hunt dwarf reed snakes.
Kojima, Y., Fukuyama, I., Hossman, MY, Kaliang, CH and Nishikawa, k. (2026). Locomotor kinematics and head stabilization in rolling snakes. Current biology, 36(20). https://doi.org/10.1016/j.cub.2026.08.057
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