Hedgehog Hibernation Welfare and Autumn Care

Hedgehogs must accumulate sufficient fat reserves before entering hibernation, typically from October to April. Underweight hedgehogs that attempt hibernation risk dying before spring, making autumn welfare interventions potentially life-saving.

Key Facts

Hedgehogs need to weigh at least 600g before hibernation to survive the winter
Juveniles born late in the year often fail to reach hibernation weight before cold weather arrives
Supplementary autumn feeding can make the difference between a hedgehog surviving winter or dying
Hedgehogs seen out in daylight from November onwards are usually in distress and need help

Welfare Considerations

Hedgehogs that enter hibernation underweight deplete their fat reserves before winter ends and die before spring. Late-born juvenile hedgehogs are particularly at risk as they have less time to accumulate fat reserves. Cold snaps in October and November can force early hibernation attempts before animals are physiologically ready. Hedgehogs that rouse from hibernation prematurely due to warmth also deplete fat reserves unnecessarily. Autumn garden feeding with specialist hedgehog food or dog food provides a welfare safety net during this critical period.

What You Can Do

Put out specialist hedgehog food or wet cat or dog food from late summer through autumn
Weigh any hedgehogs you regularly see and contact a rescue if they are below 600g by mid-October
Never disturb hibernating hedgehogs unless they are clearly unwell or at risk
Leave piles of leaves or log stacks in sheltered corners as hibernation sites in your garden