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Mayor Claudia Kalisch, vice‑president of the German Federation of Cities and leader of the Green‑party city of Lüneburg, announced a push for a nationwide ban on night‑time use of robotic lawnmowers. The proposal aims to curb injuries and deaths among hedgehogs and other small nocturnal animals that frequent residential gardens after dark.Recent research has highlighted that the fast‑moving blades of autonomous mowers pose a hidden danger to wildlife active between dusk and dawn. Hedgehogs, which often curl into a ball when threatened, are especially difficult for mower sensors to detect.Kalisch told the Funke newspaper group that urban green spaces have become critical refuges as development and intensive agriculture shrink natural habitats. She noted that petitions urging the ban have amassed tens of thousands of signatures earlier this year, reflecting broad public concern.In addition to legislative pressure, the mayor called on manufacturers to develop hedgehog‑friendly technology. She emphasized that industry responsibility is essential for protecting biodiversity and improving city life quality.The European red‑list classifies hedgehogs as "near threatened" since 2024, after a documented 30% population decline over the past decade. Beyond mower hazards, motorised leaf blowers, vacuums, and vehicle collisions—responsible for up to one in three fatalities—exacerbate the species’ decline across Europe.Scientists at the University of Oxford, in collaboration with Danish colleagues, recently demonstrated that hedgehogs can hear high‑frequency ultrasound, opening the possibility of sonic road repellers to deter them from dangerous areas. The same team has produced 3D‑printed, crash‑test dummy hedgehogs to work with manufacturers on a future certification scheme for "hedgehog‑safe" mowers.Study co‑author Anne Berger of Germany’s Leibniz Institute for Zoo and Wildlife Research warned that injuries from robotic mowers place an "enormous burden" on animal‑care centres, with many victims discovered days or weeks after the incident, enduring prolonged suffering.German law already protects hedgehogs, imposing fines of up to €65,000 for illegal trapping, injury, or killing. Several cities—including Cologne, Leipzig and Munich—have already outlawed night‑time mower operation. However, a recent attempt by the Greens to enact a statewide ban in Bavaria was rejected.