Reptiles
Eastern Worm Snake
Carphophis amoenus · also called worm snake
Lifting a flat stone in a shaded eastern forest, a hiker exposes an eastern worm snake mid-burrow, its smooth, glossy body already pushing back into the loose soil it spends nearly its entire life moving through in search of the earthworms it depends on almost exclusively.
Overview
The eastern worm snake, Carphophis amoenus, is a small, burrowing snake native to deciduous forest habitat across a broad range of the eastern United States. Its near-total dietary specialisation on earthworms and genuinely worm-like appearance make it one of the more physically and behaviourally specialised small snakes found in eastern North American woodlands.
A snake built to disappear underground
Everything about the eastern worm snake, from its reduced eyes to its smooth, featureless scales, points toward a life spent almost entirely out of sight, surfacing only briefly before slipping back into the loose forest soil its earthworm prey calls home.
Status
Least Concern — widespread and common across suitable deciduous forest habitat throughout the eastern United States.
Eastern Worm Snake: common questions
What does an eastern worm snake eat?
An eastern worm snake feeds almost exclusively on earthworms, along with occasional soft-bodied insect larvae encountered while burrowing through loose soil, a highly specialised diet that keeps this small snake tightly tied to moist, worm-rich forest floor habitat throughout its life.
Why does an eastern worm snake have such tiny eyes?
An eastern worm snake has small, reduced eyes compared with more surface-active snake species, a feature reflecting its largely subterranean, burrowing lifestyle, where keen eyesight offers little practical advantage underground compared with a keen sense of touch and smell.
Can the spine on an eastern worm snake's tail hurt you?
No, an eastern worm snake has a small, sharp spine at the tip of its tail that it sometimes presses firmly against a handler's skin as a harmless defensive response, but the spine cannot break the skin the way a true sting or bite would, making the species entirely harmless to people.
Where does the eastern worm snake live?
The eastern worm snake is native to deciduous forest habitat across a broad range of the eastern United States, spending nearly all of its time burrowing through loose soil and leaf litter rather than moving across open ground.