Slow Worm Welfare and Garden Conservation

The slow worm is a legless lizard that thrives in gardens and rough grassland, beloved by wildlife gardeners, yet faces significant welfare threats from garden strimmers, cats, and the loss of undisturbed habitats it requires.

Key Facts

Slow worms are legless lizards, not snakes; they have eyelids and a different skull structure from true snakes
They live in damp, loose soil habitats including compost heaps, under log piles, and in rough grassland
Slow worms are the longest-lived lizard species recorded, with individuals surviving over 50 years in captivity
They give birth to live young and are excellent pest controllers, feeding heavily on slugs
Slow worms can shed their tail to escape predators, regrowing a shorter version subsequently

Welfare Considerations

Slow worm welfare in garden settings is primarily threatened by mechanical strimmers that kill or badly injure individuals hidden in long grass. Cat predation is a major mortality source in suburban gardens. The loss of rough, undisturbed garden areas to hard landscaping eliminates slow worm habitat. Slug pellets that poison the slug prey also affect slow worms through secondary poisoning. Providing undisturbed rough areas with compost heaps and log piles is the most effective garden welfare intervention.

What You Can Do

Check rough grass areas carefully before strimming, especially during warm months
Provide compost heaps and log piles as slow worm refuges and basking sites
Never use metaldehyde slug pellets that reduce the slug prey slow worms depend on
Keep cats indoors at dawn and dusk when slow worms are most active
Contribute slow worm records to county reptile and amphibian recording groups