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Hedgehogs Hear Ultrasound: A Road Safety Breakthrough

3/16/2026

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Hedgehogs Hear Ultrasound

Researchers from the University of Oxford report that European hedgehogs can hear ultrasound, potentially protecting them from road traffic.
This ability could enable warning devices that emit high-frequency sounds to deter hedgehogs from dangerous areas.
The study tested 20 hedgehogs recovering at wildlife rescue centers in Denmark and used auditory brainstem response tests.
Future research will examine hedgehogs’ responses to these sounds to reduce vehicle and machinery collisions.

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Hedgehogs Need Helpers

The National Hedgehog Monitoring Programme invites volunteers to help identify hedgehogs using camera footage.
Creating hedgehog highways by cutting gaps in fences can connect fragmented gardens.
Residents are encouraged to leave wild areas undisturbed and to advocate for hedgehog-friendly practices in local parks.
Providing shelter, such as hedgehog houses, and ensuring gardens are rich in insects can support their diet.

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Hedgehogs Hear Ultrasound

Researchers from the University of Oxford report that European hedgehogs can hear ultrasound, potentially protecting them from road traffic.
This ability could enable warning devices that emit high-frequency sounds to deter hedgehogs from dangerous areas.
The study tested 20 hedgehogs recovering at wildlife rescue centers in Denmark and used auditory brainstem response tests.
Future research will examine hedgehogs’ responses to these sounds to reduce vehicle and machinery collisions.

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