Overview
- The team led by Yosuke Kojima published high-speed video and kinematic analysis in Current Biology on Monday, October 19, 2026, providing the first lab-confirmed footage of the behavior.
- Researchers placed individual snakes on a 2.2-meter racetrack and filmed 11 Pseudorabdion and six Calamaria snakes, finding all tested Pseudorabdion species rolled while none of the Calamaria did.
- The roll proceeds by repeated 'strokes' in which one side of the body whips forward and an arched section swings down past the head, allowing continuous cartwheeling while the head stays oriented forward.
- Measured peak speeds in the paper ranged about 1.7 to 3.7 meters per second (roughly 6–13 km/h), though some outlets summarized the numbers differently, so readers should consult the study for exact figures.
- Authors and outside experts say the neural control, anatomy and energy costs that enable this escape mode remain unknown and the finding is geographically limited so far to Southeast Asian Pseudorabdion, with implications for how novel locomotor strategies evolve.