Lizards of South Carolina & Beyond: A Guide to Identification, Behavior & Safety

As someone who’s spent over a decade exploring the trails and backwoods of the American Southeast, I’ve developed a deep appreciation for the often-overlooked reptile life around us. And when it comes to lizards in South Carolina, there’s a surprising amount of diversity. From the tiny anoles darting across sun-baked rocks to the increasingly common, and concerning, presence of the black and white tegu, understanding these creatures is crucial for both outdoor enthusiasts and pet owners. This guide will cover the lizards of South Carolina, delve into the specifics of the black and white tegu size and impact, and even explore similar species found in lizards in South America and Hawaii, like those found on lizards in Maui. We’ll also discuss how to keep your dogs safe around these fascinating reptiles – lizards and dogs can sometimes have unfortunate encounters.

Understanding South Carolina's Native Lizard Species

South Carolina boasts a rich herpetofauna, with a variety of native lizard species adapted to different habitats. Before we dive into the invasive tegu issue, let’s appreciate the lizards that naturally call the Palmetto State home. These species play important roles in the ecosystem, controlling insect populations and serving as prey for larger animals.

Common Lizards You'll Encounter

• Eastern Fence Lizard (Sceloporus undulatus): These are perhaps the most commonly seen lizards, often found basking on fences (hence the name!), rocks, and trees. They’re generally brownish-gray with a blue patch on the males’ bellies.
• Green Anole (Anolis carolinensis): Also known as the American chameleon, these lizards can change color from green to brown, though this is more about temperature regulation and mood than camouflage. They’re arboreal, meaning they live in trees and shrubs.
• Five-lined Skink (Plestiodon fasciatus): These sleek, shiny skinks are easily identified by the five stripes running down their backs. They prefer moist habitats like woodlands and gardens.
• Ground Skink (Scincella lateralis): Smaller and more secretive than the five-lined skink, ground skinks are found in leaf litter and under rocks.
• Broadhead Skink (Plestiodon latiscapus): Larger than the five-lined skink, with a broader head, these skinks are found in a variety of habitats, including woodlands and swamps.

For more detailed identification resources, the South Carolina Herpetological Society is an excellent resource.

The Black and White Tegu: An Invasive Threat

The biggest recent change in the lizards in SC landscape is the establishment of the Argentine black and white tegu (Salvator merianae). Originally from South America, these large lizards are becoming increasingly prevalent in parts of South Carolina, particularly in the Lowcountry. Their presence is a serious concern for native wildlife.

What Makes Tegus a Problem?

Tegus are opportunistic omnivores, meaning they’ll eat just about anything – insects, small mammals, birds, eggs, and even fruits. This broad diet puts them in direct competition with native species, and their large size allows them to prey on vulnerable animals. The National Park Service is actively monitoring tegu populations in Everglades National Park and is concerned about their potential spread. They are also known to raid nests, consuming bird eggs and turtle eggs.

Black and White Tegu Size and Characteristics

Adult tegus can reach impressive sizes, typically growing to 3-4 feet long and weighing 7-10 pounds, though some individuals can exceed that. They have distinctive black and white banding, though the pattern can vary. They are powerful animals with strong jaws and claws. Understanding their size and capabilities is crucial for assessing the potential impact on the ecosystem.

How Did They Get Here?

Most tegus in South Carolina are believed to be escaped or released pets. The illegal pet trade contributes to the problem, as does irresponsible pet ownership. It’s illegal to import or possess tegus in South Carolina without a permit, but enforcement can be challenging.

Lizards in South America: The Tegu's Native Habitat

To understand the tegu’s potential impact, it’s helpful to look at its native range in lizards in South America. Tegus are native to Argentina, Brazil, Paraguay, and Uruguay, where they inhabit a variety of habitats, including forests, grasslands, and wetlands. They play a natural role in these ecosystems, but their introduction to a new environment like South Carolina disrupts the delicate balance.

Other notable lizards found in South America include:

• Green Iguana (Iguana iguana): A large, arboreal lizard common in tropical South America.
• Caiman Lizard (Dracaena guianensis): A semi-aquatic lizard with a powerful bite, adapted for eating snails and crustaceans.
• Red-footed Tortoise (Chelonoidis carbonarius): While technically a tortoise, it's often grouped with lizards in popular discussion.

Lizards on Maui and Other Hawaiian Islands

While geographically distant, the story of invasive lizards in Hawaii mirrors the situation in South Carolina. Several lizard species have been introduced to the Hawaiian Islands, impacting native ecosystems. Among the lizards in Maui and other islands, you’ll find:

• Jackson's Chameleon (Trioceros jacksonii): An introduced chameleon that preys on native insects.
• House Gecko (Hemidactylus frenatus): A common gecko that competes with native lizards for resources.
• Bronze Anole (Anolis cooki): Another introduced anole species.

The Hawaii Department of Land and Natural Resources is actively working to control invasive lizard populations and protect native species.

Lizards and Dogs: Potential Risks and Safety Precautions

As a dog owner myself, I know how much we worry about our furry friends. Encounters between lizards and dogs can range from harmless curiosity to potentially dangerous situations. Here’s what you need to know:

Potential Hazards

• Salmonella: Lizards can carry Salmonella bacteria, which can be transmitted to dogs (and humans) through contact with their feces.
• Bites: While rare, larger lizards like tegus can bite if they feel threatened. A tegu bite can be painful and require medical attention.
• Ingestion of Toxins: If a dog eats a lizard that has consumed pesticides or other toxins, the dog could become ill.

Safety Tips

1. Supervise your dog: Keep a close eye on your dog when outdoors, especially in areas where lizards are common.
2. Discourage chasing: Train your dog to leave lizards alone.
3. Wash hands: If your dog interacts with a lizard, wash your hands thoroughly afterward.
4. Monitor for symptoms: If your dog shows signs of illness (vomiting, diarrhea, lethargy) after a lizard encounter, consult a veterinarian.

The Smallest Tegu Species and Conservation Efforts

While the Argentine black and white tegu is the most problematic invasive species, it’s worth noting that several other tegu species exist. The smallest tegu species is the Gold Tegu (Salvator rufescens), which typically reaches around 2.5-3 feet in length. However, even smaller tegus can pose ecological risks if introduced to non-native environments.

Conservation efforts are focused on preventing the further spread of tegus in South Carolina. This includes public education, trapping programs, and stricter regulations on the pet trade. Reporting sightings of tegus to the South Carolina Department of Natural Resources (https://www.dnr.sc.gov/) is crucial for tracking their distribution and implementing effective control measures. The Leave No Trace Center for Outdoor Ethics principles also apply – responsible outdoor recreation helps minimize our impact on sensitive ecosystems.

Understanding the lizards of South Carolina, the threat posed by invasive species like the tegu, and how to coexist safely with these reptiles is essential for preserving the natural beauty and biodiversity of our state. By staying informed and taking responsible actions, we can all contribute to a healthier ecosystem for generations to come.