Slow worms are typically grey-brown, with the females having a coppery sheen and two lateral black stripes, and the males displaying
electric blue spots, particularly in the breeding season. They
give birth to live young, which are about long at birth and generally have golden stripes. Slow worms are slow-moving and can be easily caught, which has given rise to the
folk etymology that the "slow" in slow worm is the same as the English adjective slow; the actual origin is a
proto-Germanic root which simply means "slowworm" (cf. German
Schleiche). Principal predators are birds, badgers, hedgehogs, foxes, and domestic cats. The average British slow worm can grow to 45 cm when fully mature and weigh about 100g, females being slightly larger than the males. The tail makes up around half its length, but is indistinguishable from the body. It has been recorded to live for up to 30 years in the wild, and the record age for a slow worm in captivity is 54 years (Copenhagen Zoo). The
specific name
fragilis (fragile) comes from the tendency of this species to shed its own tail (caudal autotomy) when threatened by predators or if handled too roughly. ==Morphology==