Why do snakes shed their skin? Here's the science behind it

Snakes are probably one of the most enigmatic animals for humans who are equally scared and amazed by the slithering reptiles. Found in almost all regions on the planet, they possess abilities that leave many bewildered, such as eating up a prey whole or shedding their skin from time to time. All reptiles, such as lizards, turtles, geckos and snakes, shed their skin. However, while most of them do it in pieces or flakes, snakes are the only ones that shed their skin in a complete, single piece. But why do they do so, and what is the reason behind it? Let's find out!

How do snakes shed their skin?


Snakes shed their skin through a process known as ecdysis. The shedding varies with a snake's age, species and environment. The occurrence of the shedding can be as regular as once a month to a handful of times over the year, according to Animal Planet. Younger snakes are known to shed more often than adults, as they are growing.

According to Washington State University's Ask Dr. Universe, before a snake is about to shed their skin, they have certain signs that owners or keepers can look out for. These include their eyes becoming bluish or opaque, not eating frequently and becoming less active.

Why do snakes shed their skin ?


Unlike humans, whose skin grows and regenerates continuously, snakes have to shed their older skin entirely to be able to accommodate their growing bodies. When snakes grow, their skin does not stretch. Thus, they develop a new layer of skin underneath the old one. When the time comes, they shed the older layer of the skin gradually and begin to reveal the new skin.

While growth is the primary reason why snakes shed their skin, another reason for shedding could also be to remove any kind of bacteria or parasites that might have made a home on their skin, as per the Iowa Department of Natural Resources.

Additionally, shedding the older skin also allows them to heal from any minor injury and maintain the health of their skin. The new skin is more vibrant and brighter, thus keeping them healthy and helping them in camouflage.

A very common sign that the shedding season might be here is when they start rubbing against a rock, tree or similar hard surface. They start rubbing a spot by their snout and gradually slip out of their old skin. While most snakes shed their skin on land, some can interestingly do it in water too. Essentially, shedding the old skin is a sign of a snake's growth in life and is healthy for them.