Uropeltidae

The Uropeltidae, also commonly known as shield-tail snakes, shield-tailed snakes or earth snakes, are a family of special kinds of snakes that live mainly underground. They are found in Peninsular India and Sri Lanka.

These snakes are called "shield-tail" because they have a large, hard shield-like piece of skin at the end of their tails.

These snakes are not dangerous to people because they do not have venom. They spend most of their time burrowing deep into the soil, which helps them stay cool and safe. There are over 50 different kinds, or species, of shield-tail snakes, grouped into seven or eight smaller groups called genera. Scientists are still learning more about these fascinating creatures and how they live in the wild.

Description

Uropeltidae snakes, also called shield-tail snakes, are small. They usually grow between 20 to 75 centimeters long. They live underground, and this has shaped their bodies. These snakes have simple skulls and small eyes. Their eyes are not covered by a special scale but by large, flat plates.

Their tails are special. They can end in a large, rigid scale with two points or a spiky plate. Their bodies are round and covered with smooth scales.

Behaviour and natural history

Shield-tail snakes are not well understood. Studies show they mostly live underground and may come out on rainy nights. They like the top layer of soil rich in organic matter and rarely go deeper, except in very hot or dry weather.

When faced with danger, these snakes do not bite. Instead, they curl up into a ball and hide their heads. Some may use their tail to gently poke at a threat. Many have plain, dull backs but bright, colourful bellies, which they show to surprise predators. This bright colour helps warn off animals that might try to harm them.

Geographic range

Shield-tail snakes live in Peninsular India and Sri Lanka. In India, you can find them mostly in the hills of the Western Ghats, with a few species also in places like the Eastern Ghats and the hills of Central India. In Sri Lanka, these snakes live in many different areas, including dry zones and plains.

Evolutionary significance

Shield-tail snakes are special because they only live in South India and Sri Lanka. Each hill range there has its own kind of shield-tail snake, much like different islands have unique birds, similar to Darwin's finches.

These snakes are the only snake family that lives only in South Asia. Studies have shown that all shield-tail snakes share a common ancestor. They began to split from other snake families around 56 million years ago.

Feeding

Shield-tail snakes eat small animals without backbones, like earthworms. Scientists have seen these snakes eating earthworms in the wild. When they studied the snakes' stomachs, they found worms and mud inside.

Reproduction

Shield-tail snakes keep their eggs inside their mother until the babies hatch. This way, the young are born alive.

Genera

^T Type genus