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#1628 · 🦎 reptiles

Eastern Fence Lizard

🇳🇱 Haagleguaan ·Sceloporus undulatus

LCleast concern 🦎 Reptiles 📍 outside Europe
Eastern Fence Lizard, photo 1 of 8
1/8 © Scot Magnotta · CC BY-NC 4.0

what is it?

The eastern fence lizard ( Sceloporus undulatus ) is a medium-sized species of lizard found along forest edges, rock piles, and rotting logs or stumps in the eastern United States. It is sometimes referred to as the prairie lizard , fence swift , gray lizard , northern fence lizard or pine lizard . It is also referred to colloquially as the horn-billed lizard.

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 31,948iNaturalist observations
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 31,948 observations worldwide on iNaturalist.
  • Scientifically named by François Marie Daudin in 1801 (225 years ago).

fact sheet

English
Eastern Fence Lizard
Nederlands
Haagleguaan
scientific name
Sceloporus undulatus
class
Reptilia
order
Squamata
family
Phrynosomatidae
IUCN Red List
LC · least concern
sightings in NL
0
sightings worldwide
31,948
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1801 by François Marie Daudin

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Phrynosomatidae

Sources: iNaturalist taxon 36142, Wikidata Q2288496, GBIF 2451347, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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