Hiss facts for kids

A hiss is a special sound that a snake makes. Unlike humans or many animals, snakes don't have vocal cords to make sounds like talking or roaring. Instead, they create this unique sound in a different way. It's often a warning or a sign that they feel threatened.

What is a Hiss?

A hiss is a sharp, sibilant sound, like a long "s" sound. It's produced when a snake quickly pushes air out through a small opening in its mouth. Think of it like air escaping from a narrow pipe. This sound is a key part of how snakes communicate, especially when they want to tell other animals or people to stay away.

How Do Snakes Hiss?

Snakes make a hissing sound by using their respiratory system. Here's how it works:

• Taking a breath: First, a snake takes in a deep breath.
• Closing the glottis: Inside a snake's throat is a small opening called the glottis. This is similar to our windpipe opening.
• Expelling air: When a snake wants to hiss, it quickly forces air out of its lungs.
• Vibrating air: As the air rushes out through the narrow glottis, it vibrates. This vibration creates the distinct hissing sound. The faster the air moves, the louder and more intense the hiss can be. Sometimes, the rapid flicking of their tongue can also contribute to the sound as it moves quickly through the air.

Why Do Snakes Hiss?

Snakes hiss for a few important reasons, mostly related to their safety and communication:

• Warning: The most common reason a snake hisses is to warn off potential threats. If a snake feels scared or cornered, it will hiss loudly to tell you, "Stay away! I'm here, and I don't want to be bothered."
• Defense: A hiss is often the first step in a snake's defense strategy. It's a way to avoid a fight. If the warning hiss doesn't work, a snake might then try to strike or bite.
• Feeling threatened: When a snake feels like it's in danger, it will often try to make itself look bigger and more intimidating. Hissing is part of this display, making them seem more dangerous than they might actually be.
• Surprise: Sometimes, a snake might hiss if it's suddenly surprised by something or someone. It's an automatic reaction to a sudden scare.

Not all snakes hiss in the same way. Some snakes, like the King Cobra, can produce a very loud and powerful hiss that can be heard from a distance. Others might have a softer, quieter hiss. The sound can also vary depending on the snake's size and the amount of air it can push out.