Wild Hedgehog Hibernation Welfare

Hedgehog hibernation is a critical welfare period during which weight, shelter quality, and winter temperature fluctuations determine survival and health outcomes.

Key Facts

European hedgehogs typically hibernate from November to March, entering torpor with heart rate dropping from 190 to 20 beats per minute.
Hedgehogs require a minimum body weight of 600g before hibernation to survive winter without starving.
Autumn juveniles born late in the season are at particular risk of entering hibernation underweight.
Unusually warm winter periods wake hedgehogs prematurely, depleting fat reserves without reliable food availability.
Garden bonfires built on leaf piles frequently house hibernating hedgehogs — lighting without checking causes death by burning.

Welfare Considerations

Hedgehog hibernation welfare is shaped by the adequacy of autumn feeding, the quality of hibernation sites, and the stability of winter temperatures. Underweight hedgehogs that enter hibernation may die of starvation mid-winter. Disturbed hedgehogs that rouse in warm spells burn critical fat reserves finding no food in the cold landscape. Human activities — bonfire lighting, garden clearance, and slug pellet use — directly compromise individual welfare during this vulnerable period. Autumn supplementary feeding and nest box provision make measurable differences.

What You Can Do

Provide supplementary food (hedgehog food or wet cat food) in autumn to help hedgehogs reach hibernation weight.
Build a hedgehog hibernation box from untreated wood and fill with dry leaves — place in a sheltered, quiet garden corner.
Always check bonfires and leaf piles for hibernating hedgehogs before lighting or disturbing.
Report underweight late-season hedgehogs found in autumn to local hedgehog rescue organisations.