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flag Oxford and Copenhagen scientists find hedgehogs hear up to 85kHz, aiding efforts to protect them from vehicles and lawnmowers using ultrasonic repellents.

flag Scientists at the University of Oxford and University of Copenhagen have found European hedgehogs can hear sounds up to 85kHz, far beyond human hearing, due to unique ear anatomy similar to echolocating bats. flag The discovery, based on brainstem responses and micro-CT scans, could lead to ultrasonic repellents to prevent hedgehog deaths from vehicles, lawnmowers, and other dangers. flag With hedgehogs declining rapidly and one in three dying on roads, researchers aim to develop devices that deter them without harming humans or pets. flag The findings suggest hedgehogs may use ultrasound for communication, offering new avenues for conservation.

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