#1628 · 🦎 reptiles
Eastern Fence Lizard
🇳🇱 Haagleguaan ·Sceloporus undulatus
8 photos from iNaturalist (Creative Commons) · credits & licences
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
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
#1607 📷 10Western Fence Lizard
🇳🇱 Westelijke haagleguaan
Sceloporus occidentalis
LC 🌍 209.9k seen
#1612 📷 10Common Side-blotched Lizard
🇳🇱 Gevlekte leguaan
Uta stansburiana
LC 🌍 89.8k seen
#1621 📷 10Texas Spiny Lizard
🇳🇱 Texas spiny lizard
Sceloporus olivaceus
LC 🌍 41.9k seen
#1640 📷 10Desert Spiny Lizard
Sceloporus magister
LC 🌍 21.8k seen
#1641 📷 8Ornate Tree Lizard
Urosaurus ornatus
LC 🌍 21.4k seen
#1654 📷 10Prairie Lizard
Sceloporus consobrinus
🌍 16.8k seen
#1663 📷 8Zebra-tailed Lizard
🇳🇱 Hekstaartleguaan
Callisaurus draconoides
LC 🌍 14.3k seen
#1665 📷 10Texas Horned Lizard
🇳🇱 Texaanse padhagedis
Phrynosoma cornutum
LC 🌍 13.5k seen
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.
