Many people who encounter striped lizards often wonder if these creatures pose any danger. This curiosity typically stems from a concern about their potential toxicity. Understanding whether a striped lizard is harmful requires distinguishing between different types of biological defenses and knowing more about common species. This article aims to clarify misunderstandings and promote safe coexistence with these small reptiles.
Are Striped Lizards Harmful?
Most common striped lizards are neither poisonous nor venomous to humans or pets. The terms “poisonous” and “venomous” describe different ways an animal can deliver toxins. A poisonous animal releases toxins when touched or ingested. In contrast, a venomous animal injects toxins, usually through a bite or a sting.
For example, snakes and spiders are venomous because they inject toxins with their fangs or stingers. Lizards, including most striped species, do not fit into either of these categories. There are only two known venomous lizards in North America: the Gila monster and the Mexican beaded lizard.
Neither is striped, and both are found in arid regions. These two species deliver venom through chewing rather than injecting it with fangs. While a defensive bite might occur if the lizard feels threatened, it is harmless, akin to a strong pinch, and rarely breaks the skin.
Common Striped Lizards You Might See
Two common examples of striped lizards frequently encountered in North America are the Five-lined Skink and the Six-lined Racerunner. The Five-lined Skink ( Plestiodon fasciatus ) is a small to medium-sized lizard, growing up to about 8.5 inches in total length, including its tail. Juveniles are particularly striking with a dark body, five distinct white or yellowish stripes, and a bright blue tail, which fades as they mature. These skinks prefer moist, wooded areas, often found under logs, rocks, or leaf litter, and are excellent climbers.
The Six-lined Racerunner ( Aspidoscelis sexlineatus ) is another swift, slender lizard, reaching lengths of about 10.5 inches. They typically have a dark gray, olive, or brown body with six prominent yellow or white longitudinal stripes. These lizards prefer open, dry habitats such as fields, prairies, and sandy areas, and are known for their incredible speed when darting through vegetation. Both Five-lined Skinks and Six-lined Racerunners are insectivores, meaning they primarily feed on insects, spiders, and other small invertebrates, playing a beneficial role in controlling insect populations within their ecosystems.
Safe Encounters and Observation
When encountering a striped lizard, the best approach is to observe it from a distance. These reptiles are generally shy and will quickly retreat if approached too closely. Attempting to catch or handle them can cause stress to the animal and may provoke a defensive bite.
If a bite does occur, it is minor and can be treated with basic first aid. The wound should be cleaned thoroughly with soap and water to prevent infection. While serious complications are rare, monitoring the wound for any signs of infection, such as redness or swelling, is always advisable.
These lizards are an important part of the natural environment, helping to manage insect populations, and their presence indicates a healthy ecosystem. Allowing them to go about their natural behaviors without interference promotes their well-being and safe coexistence.