Family

Glass and Alligator Lizards

Anguidae

21 species in our catalog · found in 49 parks

KingdomAnimalia (Animals)
PhylumChordata (Chordates)
ClassSquamata
FamilyAnguidae (Glass and Alligator Lizards)

Species in this group

Each card shows the species at its best park — tap for the full profile

Abronia moreletii

Daily sighting probability ~50% · Likely

Anguis colchica

Daily sighting probability ~50% · Likely

Anguis fragilis

Daily sighting probability ~50% · Likely

LC Endemic

Abronia smithi

Daily sighting probability Insufficient data

Elgaria coerulea

Daily sighting probability ~30% · Possible

Anguis veronensis

Daily sighting probability ~30% · Possible

Elgaria multicarinata

Daily sighting probability ~30% · Possible

Abronia monticola

Daily sighting probability Insufficient data

Gerrhonotus infernalis

Daily sighting probability ~20% · Possible

LC Endemic

Barisia imbricata

Daily sighting probability ~20% · Possible

LC Endemic

Ophisaurus ventralis

Daily sighting probability ~20% · Possible

Abronia montecristoi

Daily sighting probability Insufficient data

Endemic

Barisia rudicollis

Daily sighting probability Insufficient data

LC Endemic

Ophisaurus compressus

Daily sighting probability ~20% · Possible

EN Endemic

Abronia deppii

Daily sighting probability Insufficient data

Gerrhonotus liocephalus

Daily sighting probability Insufficient data

Endemic

Anniella campi

Daily sighting probability Insufficient data

Anniella stebbinsi

Daily sighting probability ~10% · With luck

LC Endemic

Elgaria velazquezi

Daily sighting probability Insufficient data

VU Endemic

Elgaria panamintina

Daily sighting probability Insufficient data

Elgaria kingii

Daily sighting probability <5% · Rare

See all 21 species Show fewer

Daily sighting probability by month

Probability-weighted average across the group's species

~10%

Jan

~10%

Feb

~20%

Mar

~30%

Apr

~30%

May

~30%

Jun

~30%

Jul

~20%

Aug

~20%

Sep

~20%

Oct

~20%

Nov

~10%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Glass and Alligator Lizards

Worldwide records of this group (human observations from 2019 onwards, GBIF). Pins mark our parks — tap one for the chance of seeing at least one species of the group there.

Parks Ranked

Chance of seeing at least one species of the group · number of its species present

#	Park	Country	Species	Daily sighting probability
1	El Triunfo	🇲🇽 Mexico	2	~70%
	Morelet's Alligator Lizard			~50%
	Smith's Arboreal Alligator Lizard			Insufficient data
2	Triglav National Park	🇸🇮 Slovenia	2	~50%
	Slow Worm			~50%
	Italian Slow Worm			~10%
3	Sequoia and Kings Canyon National Parks	🇺🇸 United States	2	~50%
	Northern Alligator Lizard			~30%
	Southern Alligator Lizard			~20%
4	Białowieża National Park	🇵🇱 Poland	1	~50%
	Eastern Slow-worm			~50%
5	Snowdonia National Park	🇬🇧 United Kingdom	1	~50%
	Slow Worm			~50%
6	Plitvice Lakes National Park	🇭🇷 Croatia	1	~50%
	Slow Worm			~50%
7	Bavarian Forest National Park	🇩🇪 Germany	1	~40%
	Slow Worm			~40%
8	Reserva de la Biosfera Mariposa Monarca	🇲🇽 Mexico	3	~40%
	Transvolcanic Alligator Lizard			~20%
	Rough-necked Alligator Lizard			Insufficient data
	Guerreran Arboreal Alligator Lizard			Insufficient data
9	Cévennes National Park	🇫🇷 France	1	~40%
	Slow Worm			~40%
10	Biebrza National Park	🇵🇱 Poland	2	~40%
	Slow Worm			~20%
	Eastern Slow-worm			~20%
11	Picos de Europa National Park	🇪🇸 Spain	1	~40%
	Slow Worm			~40%
12	Redwood National Park	🇺🇸 United States	2	~30%
	Northern Alligator Lizard			~30%
	Southern Alligator Lizard			~10%
13	Channel Islands National Park	🇺🇸 United States	2	~30%
	Southern Alligator Lizard			~30%
	San Diegan Legless Lizard			~10%
14	Big Cypress National Preserve	🇺🇸 United States	2	~30%
	Eastern Glass Lizard			~20%
	Island Glass Lizard			~20%
15	La Tigra National Park	🇭🇳 Honduras	1	~30%
	Morelet's Alligator Lizard			Insufficient data
16	Hohe Tauern National Park	🇦🇹 Austria	1	~30%
	Slow Worm			~30%
17	Yosemite National Park	🇺🇸 United States	2	~30%
	Northern Alligator Lizard			~20%
	Southern Alligator Lizard			~10%
18	Mercantour National Park	🇫🇷 France	1	~30%
	Italian Slow Worm			~30%
19	Irazú Volcano National Park	🇨🇷 Costa Rica	1	~30%
	Montane Alligator Lizard			Insufficient data
20	Pyrénées National Park	🇫🇷 France	1	~30%
	Slow Worm			~30%
21	Cairngorms National Park	🇬🇧 United Kingdom	1	~30%
	Slow Worm			~30%
22	Big Bend National Park	🇺🇸 United States	1	~20%
	Texas Alligator Lizard			~20%
23	Tatra National Park	🇸🇰 Slovakia	2	~20%
	Eastern Slow-worm			~20%
	Slow Worm			Insufficient data
24	Aigüestortes National Park	🇪🇸 Spain	1	~20%
	Slow Worm			~20%
25	Fertő-Hanság National Park	🇭🇺 Hungary	1	~20%
	Slow Worm			~20%
26	Cusuco National Park	🇭🇳 Honduras	1	~20%
	Morelet's Alligator Lizard			Insufficient data
27	Tapantí-Macizo de la Muerte National Park	🇨🇷 Costa Rica	1	~20%
	Montane Alligator Lizard			~20%
28	Celaque National Park	🇭🇳 Honduras	1	~20%
	MonteCristo Arboreal Alligator Lizard			Insufficient data
29	Los Quetzales National Park	🇨🇷 Costa Rica	1	~10%
	Montane Alligator Lizard			~10%
30	Volcán Barú National Park	🇵🇦 Panama	1	~10%
	Montane Alligator Lizard			Insufficient data
31	Chirripó National Park	🇨🇷 Costa Rica	1	~10%
	Montane Alligator Lizard			~10%
32	Everglades National Park	🇺🇸 United States	2	~10%
	Island Glass Lizard			~10%
	Eastern Glass Lizard			<5%
33	Death Valley National Park	🇺🇸 United States	3	~10%
	Big Spring Legless Lizard			Insufficient data
	Southern Alligator Lizard			Insufficient data
	🦎 Panamint Alligator Lizard			Insufficient data
34	Olympic National Park	🇺🇸 United States	1	~10%
	Northern Alligator Lizard			~10%
35	Wadden Sea National Park	🇩🇪 Germany	1	~10%
	Slow Worm			~10%
36	Ecrins National Park	🇫🇷 France	1	~10%
	Slow Worm			~10%
37	Gauja National Park	🇱🇻 Latvia	1	~10%
	Eastern Slow-worm			Insufficient data
38	Great Bear Rainforest	🇨🇦 Canada	1	~10%
	Northern Alligator Lizard			~10%
39	Ordesa y Monte Perdido National Park	🇪🇸 Spain	1	~10%
	Slow Worm			Insufficient data
40	Cañón del Sumidero National Park	🇲🇽 Mexico	1	~10%
	Wiegmann's alligator lizard			Insufficient data
41	El Vizcaíno Biosphere Reserve	🇲🇽 Mexico	1	~10%
	Central Peninsular Alligator Lizard			Insufficient data
42	Braulio Carrillo National Park	🇨🇷 Costa Rica	1	~10%
	Montane Alligator Lizard			Insufficient data
43	Camargue	🇫🇷 France	1	~10%
	Slow Worm			Insufficient data
44	Vanoise National Park	🇫🇷 France	1	<5%
	Slow Worm			Insufficient data
45	La Amistad International Park (Panama)	🇵🇦 Panama	1	<5%
	Montane Alligator Lizard			<5%
46	Glacier National Park	🇺🇸 United States	1	<5%
	Northern Alligator Lizard			Insufficient data
47	Pacific Rim National Park Reserve	🇨🇦 Canada	1	<5%
	Northern Alligator Lizard			Insufficient data
48	Saguaro National Park	🇺🇸 United States	1	<5%
	Arizona Alligator Lizard			<5%
49	Joshua Tree National Park	🇺🇸 United States	1	<5%
	San Diegan Legless Lizard			Insufficient data