#1474 · 🦎 reptiles
Common Slowworm
🇳🇱 Hazelworm ·Anguis fragilis
📍 Sint Pieter, Maastricht, Nederland
📍 8051 Hattem, Netherlands
📍 Zuid-Kennemerland National Park, Overveen, North Holland, NL
📍 Nationaal Park Zuid-Kennemerland, Overveen, Noord-Holland, NL
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © royc614 · CC BY-NC 4.0
- 2. © Shreybae · CC BY-NC 4.0
- 3. © Shreybae · CC BY-NC 4.0
- 4. © Shreybae · CC BY-NC 4.0
- 5. © Johannes Merz · CC BY-NC-ND 4.0
- 6. © davidchas · CC BY-NC 4.0
- 7. Sint Pieter, Maastricht, Nederland:© Paul G. Schrijvershof · CC BY-NC-ND 4.0
- 8. 8051 Hattem, Netherlands:© Mariska de Wit · CC BY-NC 4.0
- 9. Zuid-Kennemerland National Park, Overveen, North Holland, NL:© Steven Schulting · CC BY-NC 4.0
- 10. Nationaal Park Zuid-Kennemerland, Overveen, Noord-Holland, NL:© markusgmeiner · CC BY-NC 4.0
what is it?
Anguis fragilis , the slowworm , is a legless lizard native to Eurasia. It is also called a blindworm , deaf adder or, regionally, a long-cripple ; to distinguish it from the Peloponnese slowworm, it is also sometimes called a common slowworm . The 'blind' in 'blindworm' refers to the lizard's small eyes, similar to a blindsnake (although the slowworm's eyes are functional).
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
- Spotted 561 times in the Netherlands on iNaturalist: the #2 most seen of the reptiles in NL.
- 49,173 observations worldwide on iNaturalist.
- Scientifically named in 1758 (268 years ago).
fact sheet
- English
- Common Slowworm
- Nederlands
- Hazelworm
- scientific name
- Anguis fragilis
- class
- Reptilia
- order
- Squamata
- family
- Anguidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 561
- sightings in Europe
- 47,389
- sightings worldwide
- 49,173
- GBIF records in NL
- 41,393
- weight
- —
- length
- —
- lifespan
- —
- named
- 1758
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Anguidae
#1490 📷 9European Glass Lizard
🇳🇱 Scheltopusik
Pseudopus apodus
LC 👀 1 in NL
#1620 📷 10Southern Alligator Lizard
🇳🇱 Zuidelijke alligatorhagedis
Elgaria multicarinata
LC 🌍 42.9k seen
#1662 📷 10Northern Alligator Lizard
Elgaria coerulea
LC 🌍 14.6k seen
#1525 📷 10Eastern Slowworm
🇳🇱 Oostelijke Hazelworm
Anguis colchica
🌍 7.6k seen
#1762 📷 7Eastern Glass Lizard
🇳🇱 Oostelijke glasslang
Ophisaurus ventralis
LC 🌍 5.8k seen
#1535 📷 10Italian Slowworm
🇳🇱 Italiaanse Hazelworm
Anguis veronensis
LC 🌍 5.3k seen
#1603 📷 10Greek Slowworm
🇳🇱 Griekse Hazelworm
Anguis graeca
LC 🌍 380 seen
Sources: iNaturalist taxon 343021, Wikidata Q183660, GBIF 2468095, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.
