Why the Corn Snake Is the Perfect Pet For Reptile Enthusiasts

Highly adaptable, corn snakes are well-suited to a range of habitats across the region. The species' natural range extends from southern New Jersey to the Florida Keys and includes large portions of Tennessee, Kentucky, the Carolinas and the Gulf Coast states.

In the continental U.S., corn snakes have relatives aplenty. They're classified as New World rat snakes, a group of nonvenomous serpents that feed on rodents and other small animals.

One well-known species is the eastern rat snake, which occurs as far north as Vermont. That hardy animal can grow to be more than 7 feet (2.1 meters) long, but corn snakes are a bit on the smaller side: Full-grown corns rarely exceed 5.5 feet (1.67 meters) in length.

Corn snakes in the wild usually look tannish-orange and display black-bordered patches of dark red scales. Flip one over and you may find a checkered, black-and-white pattern on its underbelly.

Perhaps this explains its common name; those bellies might have reminded early settlers of multicolored corn kernels. (Though some believe the name "corn snake" originated from the species’ frequent presence near cornfields, where they help control rodent populations.)

Cohabitation and Defense Strategies

Even though modern rat snakes aren't venomous, anatomical evidence suggests that their prehistoric ancestors were. Somewhere down the line, the forerunners of today's corns lost the ability to produce venom. In its absence, living rat snakes use constriction to kill their prey.

But when danger strikes, wild corns have been known to behave like venomous species. Hey, imitation's the highest form of flattery, right?

Corns coexist with a variety of different rattlesnakes, like the eastern diamondback. Lacking "rattles" themselves, corn snakes can nevertheless produce loud buzzing sounds when they vibrate their tails against dead leaves or tufts of grass.

Sometimes, this defensive strategy frightens would-be predators. It's a popular tactic. Across North America, lots of other harmless snakes — such as the bull snake and the southern black racer — use the same trick.

Unfortunately, people often mistake harmless corns for venomous copperhead snakes. A kind of pit viper, the copperhead uses heat-sensing depressions, or "pits," behind its nostrils to track down rodents and other warm-blooded prey items.

Like corns, copperheads are abundant in the Southeast, and they have dark blotches on their backs. The good news is it's fairly easy to tell these reptiles apart — once you know what to look for.

Skull Differences

Let's talk craniums. Copperheads have triangular skulls and vertical, slit-like pupils. Yet the edges of a corn snake's head are more rounded. Also, rat snake pupils are basically circular.

Coloration Differences

Patterning is another area of distinction. Your average copperhead will look browner than a typical corn snake, and unlike most corns, the pit vipers tend to have hourglass-shaped backside blotches.

One thing the two snakes have in common is a taste for rodents. Young corns predominantly feed on small prey, like tree frogs and lizards. But as the rat snakes get older, they'll begin to consume birds, eggs and of course, rodents. Indeed, small mammals like voles, marsh rats and white-footed mice are dietary staples for full-grown corn snakes.

Corn snakes (and other rate snakes) are prized for their ability to control populations of rodents, making them valuable to both natural ecosystems and agricultural areas.

By feeding on wild rodent pests that can damage crops and spread disease, corn snakes help protect the integrity of farmland, particularly in regions where rodents are abundant. This is especially important in areas where rats that eat harvested corn can cause significant crop loss.

So allowing corn snakes, copperheads and other natural predators do their thing can really benefit farmers — and the rest of us, for that matter.

Where You Can Find Corn Snakes

Speaking of farms, corn snakes have an affinity for barns, old houses and abandoned buildings. Why wouldn't they? Rodents and small birds are attracted to these man-made shelters.

Wild corns will also take refuge under logs or discarded boards. You stand a good chance of finding one in a field or meadow that borders a forested area.

While much of their hunting is done at ground level, corn snakes are versatile predators, often pursuing their prey into rodent burrows. Their slender bodies and impressive flexibility allow them to navigate tight spaces underground with ease.

However, their skills aren’t limited to the ground: Corn snakes are also adept climbers.

In search of prey such as birds or bird eggs, they will climb trees, demonstrating remarkable agility as they slither along branches. Their ability to wedge themselves into tree bark crevices enables them to climb vertical or nearly vertical surfaces, making them highly effective hunters both in the trees and on the ground.

After satisfying their hunger, corn snakes turn their attention to mating, especially during the warmer months of the year. Transitioning from hunting to reproduction, corn snakes seek out mates using pheromones, marking the beginning of their breeding season.

In the southern part of their range, corns remain active throughout the year. But northern populations are more seasonal, with the adult snakes cozying up in empty burrows for the winter.

Breeding usually takes place during the spring; after a 30- to 45-day gestation period, females lay clutches of 10 to 30 eggs. Once the eggs hatch, the young snakes are fully independent.

And corns are not shy about mating in captivity. As such, corn snakes of all ages are widely available in pet stores and at reptile conventions.

Most people who have corn snakes for pets keep them in glass terrariums with screen lids. An adult snake will require at least a 20-gallon (75.7-liter) enclosure measuring 30 inches by 12 inches (76 centimeters by 30.5 centimeters).

But if you have the space, consider getting a bigger one. Baby corns can be housed in smaller enclosures — although you'll eventually need to provide them with an adult-sized setup.

Terrarium Setup

Cover the bottom of the terrarium with aspen shavings or (if you're not too worried about aesthetics) dry newspapers. Then get yourself a small, sturdy water dish — and expect to clean it daily.

As far as furnishings go, a hiding place is an absolute must, as snakes really like their privacy. Shoeboxes and commercial reptile "hides" will fit the bill.

Temperature Control

It's generally a good idea to give pet reptiles a temperature gradient inside their enclosures. Using a heat lamp, keep one end of the terrarium at 85 degrees Fahrenheit (29 degrees Celsius). The other side should stay at about 70 degrees Fahrenheit (21 degrees Celsius). Unlike many lizards and turtles, pet corns do not require a UV lighting fixture.

Feeding

Depending on your corn snake's age, it should get fed every five to seven days — or every seven to 10 days. The perfect meal is a mouse that's roughly the same width as the reptile is at its widest point. Since live prey can be dangerous, experts strongly recommend giving frozen mice to your pet.

Life Expectancy

Corn snakes are long-lived reptiles when cared for properly. In fact, the oldest corn snake on record lived to be 32 years old in captivity, far surpassing the typical lifespan of 10 to 20 years. This shows just how well these snakes can thrive with the right care and attention.

We updated this article in conjunction with AI technology, then made sure it was fact-checked and edited by a HowStuffWorks editor.