Is slow worm a snake? This question often arises among people who are new to herpetology, the study of reptiles and amphibians. While the name “slow worm” might suggest a reptile similar to a snake, it is actually a type of legless lizard, not a snake. In this article, we will explore the differences between slow worms and snakes, their habitats, and the unique characteristics that set them apart.
Slow worms, scientifically known as Anguis fragilis, are native to Europe and parts of Asia. They are the only species in the genus Anguis, which is a group of legless lizards. Despite their name, slow worms are not true snakes and belong to the family Anguidae. On the other hand, snakes are part of the family Colubridae and are characterized by their elongated bodies, lack of legs, and highly flexible skulls.
One of the most noticeable differences between slow worms and snakes is their appearance. Slow worms have a smooth, shiny skin that can range in color from shades of brown to gray or even green. Their bodies are cylindrical and lack the distinctive scales found on snakes. Snakes, on the other hand, have a more serpentine body shape and scales that are typically keeled, meaning they have a raised ridge along the center of each scale.
Another key difference is the way they move. Slow worms use a method called lateral undulation, which involves moving their bodies side to side in a wave-like motion. This movement is slower and more deliberate than the rapid, sinuous undulations of a snake. Snakes are known for their impressive agility and can move quickly and efficiently over various types of terrain.
When it comes to habitat, slow worms prefer damp, wooded areas with plenty of vegetation. They are often found in gardens, hedgerows, and forests, where they can easily hide from predators. Snakes, on the other hand, can be found in a wide range of habitats, from deserts to forests, and even in urban environments. This adaptability makes snakes one of the most diverse groups of reptiles on the planet.
Despite their differences, slow worms and snakes share some similarities. Both are ectothermic, meaning they rely on external heat sources to regulate their body temperature. They also have a similar diet, primarily consisting of earthworms and other invertebrates. However, slow worms are not venomous, whereas some species of snakes are.
In conclusion, while the name “slow worm” might lead one to believe it is a type of snake, it is actually a legless lizard. Understanding the differences between these two reptiles can help us appreciate the unique characteristics and adaptations that make each species special. So, the next time you encounter a slow worm, remember that it is not a snake but a fascinating member of the legless lizard family.
