Hedgehog Welfare: Supporting a Declining Garden Species

European hedgehogs have declined by an estimated 30-50% in the UK since 2000, with road mortality, habitat loss, and pesticide use among the leading causes — and garden management choices by individuals can make a genuine difference to their welfare and survival.

Key Facts

UK hedgehog populations have declined from an estimated 30 million in the 1950s to fewer than 1 million today
Road mortality is the leading cause of hedgehog death — hedgehogs roll into a ball when threatened by fast-moving objects, a defence that fails entirely against vehicles
Garden pesticides reduce the invertebrate prey that hedgehogs depend on and can cause direct toxicity through secondary poisoning of slugs and worms treated with pesticides
Hedgehogs range up to 2 km per night and require multiple garden access points — enclosed gardens with no gaps in fencing effectively trap or exclude them
Bonfire piles are a significant cause of hedgehog mortality — animals shelter in leaf and brush piles and are burned alive if piles are not checked before lighting
Garden ponds without exit ramps are a drowning trap for hedgehogs, which are good swimmers but cannot climb smooth vertical pond edges
The People's Trust for Endangered Species's Hedgehog Street campaign has mapped hedgehog corridors and promoted garden connectivity across the UK

Welfare Considerations

Wild hedgehog welfare is affected daily by millions of individual garden management decisions — whether to use pesticides, whether to leave a gap in the fence, whether to check the bonfire pile. The aggregate effect of these decisions across millions of gardens determines whether hedgehogs have enough connected habitat and food to survive. Unlike many wildlife welfare issues that require large-scale policy change, hedgehog welfare is genuinely responsive to individual household action. This makes it an unusually accessible welfare issue where personal choices translate directly into reduced suffering and death for wild animals.

What You Can Do

Create a hedgehog highway — a 13x13cm gap in your garden fence connecting to neighbouring gardens
Stop using pesticides and slug pellets that reduce hedgehog food and cause secondary poisoning
Check bonfire piles immediately before lighting — move them if possible, or check carefully with a stick for sheltering animals
Install a pond exit ramp or stone ramp to prevent hedgehog drowning if you have a garden pond
Provide supplementary hedgehog food (meat-based cat or dog food, not milk or bread) alongside a shallow water dish
Join the Hedgehog Street or similar local citizen science project to map and monitor hedgehog populations
Drive carefully through residential areas at night when hedgehogs are most active on roads