Slow Worm Welfare and Garden Conservation

The slow worm is a legless lizard native to the UK that commonly inhabits gardens and faces welfare threats from predation, strimming, and habitat loss.

Key Facts

Slow worms are legless lizards, not snakes - they have moveable eyelids and visible ear openings
They are legally protected under the Wildlife and Countryside Act 1981 from killing or injury
Domestic cats kill an estimated 12 million slow worms annually in the UK
Strimming of rough grass kills and injures slow worms which shelter in thick vegetation and log piles
Slow worms benefit enormously from provision of corrugated tin or similar shelters in gardens
They live up to 30 years and reach sexual maturity slowly, making population recovery from decline slow

Welfare Considerations

Slow worm welfare in gardens represents a case where individual welfare improvements are also conservation contributions. Cat predation is the most significant source of individual slow worm suffering in suburban areas - cats kill but often do not consume slow worms, resulting in deaths that do not even fulfill predator nutritional needs. Strimming injuries cause death and severe trauma to animals sheltering in rough grass - injuries that could be entirely prevented by checking before strimming or marking known slow worm sheltering areas. Their long lifespan and slow reproduction mean individual losses take disproportionately long to replace from a population perspective, making welfare-motivated prevention of individual deaths directly conservation-relevant.

What You Can Do

Install corrugated tin or roofing felt shelters in sunny spots to attract slow worms
Check rough grass and compost heaps before strimming or digging in areas where slow worms may shelter
Keep cats indoors during peak slow worm activity periods if possible
Report slow worm sightings to local recording groups and national reptile surveys
Create log piles and rough areas in gardens that provide habitat and thermoregulation opportunities