Anguidae (Glass and Alligator Lizards)

Species in this group

LC

Anguis fragilis

Daily sighting probability ~60% · Likely

Abronia moreletii

Daily sighting probability ~50% · Likely

Anguis colchica

Daily sighting probability ~50% · Likely

LC

Elgaria coerulea

Daily sighting probability ~40% · Likely

LC

Elgaria multicarinata

Daily sighting probability ~30% · Possible

Abronia monticola

Daily sighting probability ~30% · Possible

LC

Anguis veronensis

Daily sighting probability ~30% · Possible

LC Endemic

Ophisaurus attenuatus

Daily sighting probability ~30% · Possible

LC

Gerrhonotus infernalis

Daily sighting probability ~20% · Possible

LC Endemic

Ophisaurus ventralis

Daily sighting probability ~20% · Possible

LC Endemic

Ophisaurus compressus

Daily sighting probability ~20% · Possible

LC

Elgaria kingii

Daily sighting probability <5% · Rare

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Daily sighting probability by month

Probability-weighted average across the group's species

~10%

Jan

~10%

Feb

~20%

Mar

~30%

Apr

~40%

May

~30%

Jun

~30%

Jul

~20%

Aug

~20%

Sep

~20%

Oct

~10%

Nov

~10%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Glass and Alligator Lizards

Warmer areas are where this group is recorded most often. Shaded: the known ranges of its 33 species, darker where more of them overlap (GARD, Roll et al. 2017 & Caetano et al. 2022). Our parks Our cities In captivity: 15 zoos & centres

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Snowdonia National Park	🇬🇧 United Kingdom	1 of 12	~60%
	Slow Worm			~60%
2	El Triunfo	🇲🇽 Mexico	1 of 12	~50%
	Morelet's Alligator Lizard			~50%
3	Sequoia and Kings Canyon National Parks	🇺🇸 United States	2 of 12	~50%
	Northern Alligator Lizard			~40%
	Southern Alligator Lizard			~20%
4	Białowieża National Park	🇵🇱 Poland	1 of 12	~50%
	Eastern Slow-worm			~50%
5	Triglav National Park	🇸🇮 Slovenia	1 of 12	~50%
	Slow Worm			~50%
6	Biebrza National Park	🇵🇱 Poland	2 of 12	~50%
	Slow Worm			~30%
	Eastern Slow-worm			~30%
7	Plitvice Lakes National Park	🇭🇷 Croatia	1 of 12	~50%
	Slow Worm			~50%
8	Bavarian Forest National Park	🇩🇪 Germany	1 of 12	~40%
	Slow Worm			~40%
9	Cévennes National Park	🇫🇷 France	1 of 12	~30%
	Slow Worm			~30%
10	Channel Islands National Park	🇺🇸 United States	1 of 12	~30%
	Southern Alligator Lizard			~30%
11	Picos de Europa National Park	🇪🇸 Spain	1 of 12	~30%
	Slow Worm			~30%
12	Redwood National Park	🇺🇸 United States	2 of 12	~30%
	Northern Alligator Lizard			~30%
	Southern Alligator Lizard			~10%
13	Big Cypress National Preserve	🇺🇸 United States	2 of 12	~30%
	Eastern Glass Lizard			~20%
	Island Glass Lizard			~20%
14	Irazú Volcano National Park	🇨🇷 Costa Rica	1 of 12	~30%
	Montane Alligator Lizard			~30%
15	Mercantour National Park	🇫🇷 France	1 of 12	~30%
	Italian Slow Worm			~30%
16	Yosemite National Park	🇺🇸 United States	2 of 12	~30%
	Northern Alligator Lizard			~20%
	Southern Alligator Lizard			~10%
17	Padre Island National Seashore	🇺🇸 United States	1 of 12	~30%
	Slender Glass Lizard			~30%
18	Pyrénées National Park	🇫🇷 France	1 of 12	~30%
	Slow Worm			~30%
19	Cairngorms National Park	🇬🇧 United Kingdom	1 of 12	~30%
	Slow Worm			~30%
20	Aigüestortes National Park	🇪🇸 Spain	1 of 12	~30%
	Slow Worm			~30%
21	Tapantí-Macizo de la Muerte National Park	🇨🇷 Costa Rica	1 of 12	~30%
	Montane Alligator Lizard			~30%
22	Big Bend National Park	🇺🇸 United States	1 of 12	~20%
	Texas Alligator Lizard			~20%
23	Fertő-Hanság National Park	🇭🇺 Hungary	1 of 12	~20%
	Slow Worm			~20%
24	Cumbres de Monterrey National Park	🇲🇽 Mexico	1 of 12	~20%
	Texas Alligator Lizard			~20%
25	Hohe Tauern National Park	🇦🇹 Austria	1 of 12	~20%
	Slow Worm			~20%
26	Los Quetzales National Park	🇨🇷 Costa Rica	1 of 12	~20%
	Montane Alligator Lizard			~20%
27	Ecrins National Park	🇫🇷 France	1 of 12	~20%
	Slow Worm			~20%
28	Tatra National Park	🇸🇰 Slovakia	1 of 12	~20%
	Eastern Slow-worm			~20%
29	Everglades National Park	🇺🇸 United States	1 of 12	~10%
	Island Glass Lizard			~10%
30	Great Bear Rainforest	🇨🇦 Canada	1 of 12	~10%
	Northern Alligator Lizard			~10%
31	Chirripó National Park	🇨🇷 Costa Rica	1 of 12	~10%
	Montane Alligator Lizard			~10%
32	Wadden Sea National Park	🇩🇪 Germany	1 of 12	~10%
	Slow Worm			~10%
33	Merritt Island National Wildlife Refuge	🇺🇸 United States	1 of 12	~10%
	Eastern Glass Lizard			~10%
34	Olympic National Park	🇺🇸 United States	1 of 12	~10%
	Northern Alligator Lizard			~10%
35	Braulio Carrillo National Park	🇨🇷 Costa Rica	1 of 12	~10%
	Montane Alligator Lizard			~10%
36	La Amistad International Park (Panama)	🇵🇦 Panama	1 of 12	<5%
	Montane Alligator Lizard			<5%
37	Saguaro National Park	🇺🇸 United States	1 of 12	<5%
	Arizona Alligator Lizard			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Tijuana	🇲🇽 México	1 of 12	~30%
	Southern Alligator Lizard			~30%
2	Prague	🇨🇿 Czechia	1 of 12	~30%
	Slow Worm			~30%
3	Los Angeles	🇺🇸 United States	1 of 12	~30%
	Southern Alligator Lizard			~30%
4	Sacramento	🇺🇸 United States	1 of 12	~30%
	Southern Alligator Lizard			~30%
5	San Diego	🇺🇸 United States	1 of 12	~20%
	Southern Alligator Lizard			~20%
6	Vienna	🇦🇹 Austria	1 of 12	~20%
	Slow Worm			~20%
7	San Francisco	🇺🇸 United States	2 of 12	~20%
	Southern Alligator Lizard			~10%
	Northern Alligator Lizard			~10%
8	Istanbul	🇹🇷 Turkey	1 of 12	~20%
	Eastern Slow-worm			~20%
9	Stockholm	🇸🇪 Sweden	1 of 12	~20%
	Slow Worm			~20%
10	London	🇬🇧 United Kingdom	1 of 12	~20%
	Slow Worm			~20%
11	Paris	🇫🇷 France	1 of 12	~10%
	Slow Worm			~10%
12	Porto	🇵🇹 Portugal	1 of 12	~10%
	Slow Worm			~10%
13	Essen	🇩🇪 Germany	1 of 12	~10%
	Slow Worm			~10%
14	Miami	🇺🇸 United States	1 of 12	~10%
	Eastern Glass Lizard			~10%
15	Munich	🇩🇪 Germany	1 of 12	~10%
	Slow Worm			~10%
16	Cologne	🇩🇪 Germany	1 of 12	~10%
	Slow Worm			~10%
17	Berlin	🇩🇪 Germany	1 of 12	~10%
	Slow Worm			~10%
18	Seattle	🇺🇸 United States	1 of 12	~10%
	Northern Alligator Lizard			~10%
19	Belgrade	🇷🇸 Serbia	1 of 12	~10%
	Slow Worm			~10%
20	Budapest	🇭🇺 Hungary	1 of 12	~10%
	Slow Worm			~10%
21	Helsinki	🇫🇮 Finland	1 of 12	~10%
	Eastern Slow-worm			~10%
22	Kyiv	🇺🇦 Ukraine	1 of 12	~10%
	Eastern Slow-worm			~10%
23	Orlando	🇺🇸 United States	1 of 12	~10%
	Eastern Glass Lizard			~10%
24	Austin	🇺🇸 United States	1 of 12	~10%
	Texas Alligator Lizard			~10%
25	Birmingham	🇬🇧 United Kingdom	1 of 12	~10%
	Slow Worm			~10%
26	Barcelona	🇪🇸 Spain	1 of 12	<5%
	Slow Worm			<5%
27	Copenhagen	🇩🇰 Denmark	1 of 12	<5%
	Slow Worm			<5%
28	Kazan	🇷🇺 Russia	1 of 12	<5%
	Eastern Slow-worm			<5%
29	Monterrey	🇲🇽 México	1 of 12	<5%
	Texas Alligator Lizard			<5%
30	Vancouver	🇨🇦 Canada	1 of 12	<5%
	Northern Alligator Lizard			<5%

Zoos & Centres Where Found

#	Zoo / Centre	Country
1	San Diego Zoo	🇺🇸 United States	In captivity
2	Sedgwick County Zoo	🇺🇸 United States	In captivity
3	Los Angeles Zoo	🇺🇸 United States	In captivity
4	Phoenix Zoo	🇺🇸 United States	In captivity
5	ZooTampa	🇺🇸 United States	In captivity
6	Fort Worth Zoo	🇺🇸 United States	In captivity
7	San Antonio Zoo	🇺🇸 United States	In captivity
8	Minsk Zoo	🇧🇾 Belarus	In captivity
9	Riverbanks Zoo	🇺🇸 United States	In captivity
10	California Living Museum	🇺🇸 United States	In captivity
11	North Carolina Aquarium at Fort Fisher	🇺🇸 United States	In captivity
12	AQUA Akvarium & Dyrepark	🇩🇰 Denmark	In captivity
13	North Carolina Aquarium on Roanoke Island	🇺🇸 United States	In captivity
14	Lindsay Wildlife Experience	🇺🇸 United States	In captivity
15	Дэльфінарый	🇧🇾 Belarus	In captivity

Show all 15 Show fewer

Glass and Alligator Lizards

Species in this group

Slow Worm

Morelet's Alligator Lizard

Eastern Slow-worm

Northern Alligator Lizard

Southern Alligator Lizard

Montane Alligator Lizard

Italian Slow Worm

Slender Glass Lizard

Texas Alligator Lizard

Eastern Glass Lizard

Island Glass Lizard

Arizona Alligator Lizard

Daily sighting probability by month

When they're spotted

Where to see Glass and Alligator Lizards

Parks Ranked

Cities Ranked

Zoos & Centres Where Found