The Fascinating Reason Behind the Corn Snake’s Tail Rattle

The Corn Snake’s Unique Tail Rattle

The corn snake is a species of rat snake found in North America. It is one of the most popular pet snakes due to its docile nature and attractive coloration. But what makes the corn snake truly unique is its tail rattle. This fascinating adaptation has been the subject of much research, and scientists have uncovered some interesting facts about why this species has evolved this behavior.

What Is a Tail Rattle?

A tail rattle is a defensive behavior exhibited by some species of snakes, including the corn snake. When threatened, the snake will vibrate its tail rapidly, creating a rattling sound that can be heard from several feet away. This behavior is thought to be an evolutionary adaptation that helps deter potential predators from attacking the snake.

The Evolutionary Advantage of Tail Rattling

The tail rattle serves two main purposes: it startles potential predators and it mimics the sound of a rattlesnake. The startle response can cause potential predators to hesitate or even flee, giving the corn snake time to escape. The mimicry of a rattlesnake also serves as an effective deterrent; many predators are wary of rattlesnakes and will avoid them if possible.

How Does the Corn Snake Produce Its Tail Rattle?

The corn snake produces its tail rattle by vibrating specialized scales on its tail called “scutella” or “scutellae”. These scales are made up of keratin, which is a tough protein found in many animals’ skin and hair. When these scales are vibrated rapidly, they create a rattling sound that can be heard from several feet away.

See also  Bull Snakes Thriving in New Mexico's Deserts

Why Do Some Snakes Have Tail Rattles and Others Don’t?

Not all snakes have evolved to produce a tail rattle; some species rely on other defensive behaviors such as hissing or striking when threatened instead. The reason why some species have evolved this behavior while others haven’t is still unknown, but scientists believe it may be related to their environment or prey availability. For example, snakes living in areas with more predators may have evolved this behavior as an additional defense mechanism against predation.


The corn snake’s unique tail rattle is an interesting evolutionary adaptation that helps protect it from potential predators. By understanding how this behavior works and why some species have evolved it while others haven’t, we can gain insight into how animals adapt to their environment over time and how they use different strategies for survival in different habitats.