Northern Curly-Tailed Lizard

Fascinating facts about the Northern Curly-Tailed Lizard

• When threatened, the northern curly-tailed lizard curls its tail over its back like a scorpion — a bluff that works because predators mistake it for a venomous threat. The tail curl is so consistent that herpetologists use it as a field ID marker. This 6-inch lizard is essentially wearing a costume it didn't evolve to wear, borrowing a predator's silhouette to survive.
• These lizards are sun-worshippers with a precise schedule: they emerge at dawn, bask for exactly 20–30 minutes to hit their optimal body temperature of 38°C, then hunt. If clouds roll in, they retreat to burrows. This ruthless thermoregulation lets them thrive in Florida's scorching scrublands where other lizards overheat or starve.
• The northern curly-tailed lizard has colonised the entire southeastern United States in less than 80 years after escaping the pet trade in the 1970s — an invasion speed that rivals the most aggressive non-native reptiles. From a handful of escaped individuals near Miami, they now occupy over 4,000 square kilometres. They reproduce year-round in warm climates, laying clutches every 2–3 weeks.
• Males perform a territorial pushup display that's part threat, part advertisement: they lower their front legs, raise their body, and hold the position for up to 3 seconds while bobbing their head. A single male holds territory of roughly 100 square metres and performs this display dozens of times daily. Females assess male quality by counting the intensity and frequency of these pushups.
• Unlike most lizards, northern curly-tails eat fallen fruit alongside insects — a dietary flexibility that lets them survive lean months when arthropods disappear. They've been observed feeding on guava, cactus fruit, and berries near human settlements. This omnivory, combined with their heat tolerance and quick reproduction, is why they've become one of Florida's most successful reptile invasions despite being overlooked by conservation agencies.

At a glance

About the Northern Curly-Tailed Lizard

As the sun-baked rocks of the Caribbean come alive, the Northern Curly-Tailed Lizard emerges, its mottled brown skin blending seamlessly into the rust-hued landscape. With a twitch of its whip-like tail, it darts across the arid terrain, its spindly legs a blur as it pursues the tiny insects that sustain it, its very existence a testament to the remarkable adaptability of life in this harsh, sun-scorched world. In its effortless, darting movements, we find a fleeting glimpse of wild beauty, a celebration of the unassuming yet irrepressible spirit of this tiny, curly-tailed king of the rocky outcrops.

Discover more wildlife