Pedro Narra / Hedgehog (Erinaceus europaeus) walking through puddle. Sado Estuary, Portugal . March

Michael Hutchinson / European hedgehog (Erinaceus europaeus) in garden at dusk, with house in the background, Bristol, England, UK, 2016.

Michael Hutchinson / Close-up of a European hedgehog (Erinaceus europaeus) sniffing, Bristol, England, UK, 2016.

Dietmar Nill / Close-up of two European hedgehogs (Erinaceus europaeus) feeding on windfall pears, Mossingen, Baden-Wurttemberg, Germany, October.

Dietmar Nill / European hedgehog (Erinaceus europaeus) in road at night, with approaching car headlights, Mossingen, Baden-Wurttemberg, Germany, October.

Ingo Arndt / Hedgehog (Erinaceus europaeus) hibernating hidden in leaves, Germany, captive.

Ingo Arndt / Orphan one-week-old Hedgehog baby {Erinaceus europaeus} Germany

Ingo Arndt / Hedgehog eating earthworm {Erinaceus europaeus} Germany

Ingo Arndt / Hedgehog investigates hollow trunk {Erinaceus europaeus} Germany

Nick Garbutt / European or Common hedgehog (Erinaceus europaeus) foraging in leaf litter. Isle of Mull, Scotland, UK, June.

Cyril Ruoso / European hedgehog (Erinaceus europaeus) at dusk, Picardy, France. Non-ex

Ann & Steve Toon / Hedgehog (Erinaceus europaeus) curled up sleeping in autumn leaves, UK, June, captive.