Slow worms are legless lizards that benefit significantly from garden habitat and are threatened by cat predation, strimmer injury and loss of rough grassland habitats.
Slow worm welfare is primarily threatened in garden habitats by cat predation and strimmer injuries. Cats do not typically eat slow worms but the injuries they inflict are often fatal. Strimming of rough grass kills slow worms that cannot escape quickly enough. Their long lifespan means each individual represents significant welfare value. Deliberate killing of slow worms is illegal but sometimes occurs due to misidentification as snakes.