Crotalus (Rattlesnakes) — Wallace's Line

Species in this group

LC

Crotalus viridis

Daily sighting probability ~50% · Likely

LC

Crotalus durissus

Daily sighting probability ~50% · Likely

Crotalus pyrrhus

Daily sighting probability ~50% · Likely

LC

Crotalus atrox

Daily sighting probability ~40% · Likely

Endemic

Crotalus stephensi

Daily sighting probability ~40% · Likely

LC

Crotalus oreganus

Daily sighting probability ~40% · Likely

LC

Crotalus cerastes

Daily sighting probability ~40% · Likely

LC

Crotalus simus

Daily sighting probability ~40% · Likely

LC

Crotalus horridus

Daily sighting probability ~30% · Possible

LC Endemic

Crotalus adamanteus

Daily sighting probability ~30% · Possible

LC

Crotalus ruber

Daily sighting probability ~30% · Possible

Crotalus ornatus

Daily sighting probability ~30% · Possible

LC Endemic

Crotalus triseriatus

Daily sighting probability ~30% · Possible

LC

Crotalus lepidus

Daily sighting probability ~20% · Possible

LC

Crotalus tzabcan

Daily sighting probability ~20% · Possible

LC Endemic

Crotalus enyo

Daily sighting probability ~20% · Possible

LC

Crotalus molossus

Daily sighting probability ~20% · Possible

LC

Crotalus tigris

Daily sighting probability ~20% · Possible

LC

Crotalus mitchellii

Daily sighting probability ~10% · With luck

LC

Crotalus scutulatus

Daily sighting probability ~10% · With luck

Crotalus cerberus

Daily sighting probability ~10% · With luck

CR Endemic

Crotalus catalinensis

Daily sighting probability ~10% · With luck

Endemic

Crotalus morulus

Daily sighting probability ~10% · With luck

LC Endemic

Crotalus totonacus

Daily sighting probability ~10% · With luck

See all 24 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

~30%

Aug

~30%

Sep

~30%

Oct

~20%

Nov

~10%

Dec

When they're spotted

When the group's species are recorded (aggregated)

Where to see Rattlesnakes

Warmer areas are where this group is recorded most often. Shaded: the known ranges of its 29 species, darker where more of them overlap (GARD, Roll et al. 2017 & Caetano et al. 2022). Our parks Our cities In captivity: 193 zoos & centres

Parks Ranked

#	Park	Country	Species	Daily sighting probability
1	Joshua Tree National Park	🇺🇸 United States	6 of 24	~70%
	Southwestern Speckled Rattlesnake			~50%
	Sidewinder			~20%
	Western Rattlesnake			~20%
	Mohave Rattlesnake			~10%
	Red Diamond Rattlesnake			~10%
	Western Diamondback Rattlesnake			~10%
2	Saguaro National Park	🇺🇸 United States	6 of 24	~70%
	Western Diamondback Rattlesnake			~40%
	Western Black-tailed Rattlesnake			~20%
	Tiger Rattlesnake			~20%
	Arizona Black Rattlesnake			~10%
	Mohave Rattlesnake			~10%
	Sidewinder			~10%
3	Big Bend National Park	🇺🇸 United States	4 of 24	~70%
	Western Diamondback Rattlesnake			~40%
	Eastern Black-tailed Rattlesnake			~30%
	Mohave Rattlesnake			~10%
	Rock Rattlesnake			~10%
4	Death Valley National Park	🇺🇸 United States	2 of 24	~70%
	Panamint Rattlesnake			~40%
	Sidewinder			~40%
5	Guadalupe Mountains National Park	🇺🇸 United States	3 of 24	~60%
	Western Diamondback Rattlesnake			~30%
	Eastern Black-tailed Rattlesnake			~30%
	Rock Rattlesnake			~20%
6	Badlands National Park	🇺🇸 United States	1 of 24	~50%
	Prairie Rattlesnake			~50%
7	El Vizcaíno Biosphere Reserve	🇲🇽 Mexico	3 of 24	~50%
	Red Diamond Rattlesnake			~30%
	Lower California Rattlesnake			~20%
	Speckled Rattlesnake			~10%
8	Emas National Park	🇧🇷 Brazil	1 of 24	~50%
	Neotropical Rattlesnake			~50%
9	Sequoia and Kings Canyon National Parks	🇺🇸 United States	1 of 24	~40%
	Western Rattlesnake			~40%
10	Santa Rosa National Park	🇨🇷 Costa Rica	1 of 24	~40%
	Central American Rattlesnake			~40%
11	Shenandoah National Park	🇺🇸 United States	1 of 24	~30%
	Timber Rattlesnake			~30%
12	Zion National Park	🇺🇸 United States	1 of 24	~30%
	Western Rattlesnake			~30%
13	Yosemite National Park	🇺🇸 United States	1 of 24	~30%
	Western Rattlesnake			~30%
14	Big Cypress National Preserve	🇺🇸 United States	1 of 24	~30%
	Eastern Diamondback Rattlesnake			~30%
15	Cumbres de Monterrey National Park	🇲🇽 Mexico	6 of 24	~30%
	Tamaulipan Rock Rattlesnake			~10%
	Eastern Black-tailed Rattlesnake			~10%
	Totonacan Rattlesnake			~10%
	Rock Rattlesnake			~10%
	Western Diamondback Rattlesnake			<5%
	Western Black-tailed Rattlesnake			<5%
16	Everglades National Park	🇺🇸 United States	1 of 24	~30%
	Eastern Diamondback Rattlesnake			~30%
17	Great Smoky Mountains National Park	🇺🇸 United States	1 of 24	~30%
	Timber Rattlesnake			~30%
18	Grand Canyon National Park	🇺🇸 United States	1 of 24	~30%
	Western Rattlesnake			~30%
19	Serra da Canastra National Park	🇧🇷 Brazil	1 of 24	~30%
	Neotropical Rattlesnake			~30%
20	Reserva de la Biosfera Mariposa Monarca	🇲🇽 Mexico	1 of 24	~30%
	Dusky Rattlesnake			~30%
21	Celaque National Park	🇭🇳 Honduras	1 of 24	~30%
	Central American Rattlesnake			~30%
22	Cabo Pulmo National Park	🇲🇽 Mexico	1 of 24	~20%
	Red Diamond Rattlesnake			~20%
23	Bahía de Loreto National Park	🇲🇽 Mexico	2 of 24	~20%
	Red Diamond Rattlesnake			~10%
	Santa Catalina Island Rattlesnake			~10%
24	Chapada Diamantina National Park	🇧🇷 Brazil	1 of 24	~20%
	Neotropical Rattlesnake			~20%
25	Ostional Wildlife Refuge	🇨🇷 Costa Rica	1 of 24	~20%
	Central American Rattlesnake			~20%
26	Calakmul Biosphere Reserve	🇲🇽 Mexico	1 of 24	~20%
	Yucatán Neotropical Rattlesnake			~20%
27	Padre Island National Seashore	🇺🇸 United States	1 of 24	~10%
	Western Diamondback Rattlesnake			~10%
28	Iguazú National Park	🇦🇷 Argentina	1 of 24	~10%
	Neotropical Rattlesnake			~10%
29	Congaree National Park	🇺🇸 United States	1 of 24	~10%
	Timber Rattlesnake			~10%
30	Iguaçu National Park	🇧🇷 Brazil	1 of 24	~10%
	Neotropical Rattlesnake			~10%
31	Merritt Island National Wildlife Refuge	🇺🇸 United States	1 of 24	~10%
	Eastern Diamondback Rattlesnake			~10%
32	Yellowstone National Park	🇺🇸 United States	1 of 24	<5%
	Prairie Rattlesnake			<5%

Cities Ranked

#	City	Country	Species	Daily sighting probability
1	Mesa	🇺🇸 United States	4 of 24	~30%
	Southwestern Speckled Rattlesnake			~10%
	Western Diamondback Rattlesnake			~10%
	Western Black-tailed Rattlesnake			~10%
	Tiger Rattlesnake			<5%
2	Toluca	🇲🇽 México	1 of 24	~20%
	Dusky Rattlesnake			~20%
3	Phoenix	🇺🇸 United States	3 of 24	~20%
	Southwestern Speckled Rattlesnake			~10%
	Western Diamondback Rattlesnake			~10%
	Tiger Rattlesnake			<5%
4	San Diego	🇺🇸 United States	2 of 24	~20%
	Western Rattlesnake			~10%
	Red Diamond Rattlesnake			~10%
5	Sacramento	🇺🇸 United States	1 of 24	~20%
	Western Rattlesnake			~20%
6	Tijuana	🇲🇽 México	1 of 24	~10%
	Western Rattlesnake			~10%
7	Mexico City	🇲🇽 México	2 of 24	~10%
	Western Black-tailed Rattlesnake			~10%
	Dusky Rattlesnake			<5%
8	Los Angeles	🇺🇸 United States	2 of 24	~10%
	Western Rattlesnake			~10%
	Red Diamond Rattlesnake			<5%
9	Austin	🇺🇸 United States	1 of 24	~10%
	Western Diamondback Rattlesnake			~10%
10	Salt Lake City	🇺🇸 United States	1 of 24	~10%
	Western Rattlesnake			~10%
11	Denver	🇺🇸 United States	1 of 24	~10%
	Prairie Rattlesnake			~10%
12	San Antonio	🇺🇸 United States	1 of 24	<5%
	Western Diamondback Rattlesnake			<5%
13	Monterrey	🇲🇽 México	1 of 24	<5%
	Western Diamondback Rattlesnake			<5%
14	San Francisco	🇺🇸 United States	1 of 24	<5%
	Western Rattlesnake			<5%

Zoos & Centres Where Found

#	Zoo / Centre	Country
1	Disney's Animal Kingdom	🇺🇸 United States	In captivity
2	Busch Gardens Tampa	🇺🇸 United States	In captivity
3	San Diego Zoo	🇺🇸 United States	In captivity
4	Moscow Zoo	🇷🇺 Russia	In captivity
5	Prague Zoo	🇨🇿 Czechia	In captivity
6	National Zoological Park	🇺🇸 United States	In captivity
7	Denver Zoo	🇺🇸 United States	In captivity
8	Skansen	🇸🇪 Sweden	In captivity
9	Cincinnati Zoo and Botanical Garden	🇺🇸 United States	In captivity
10	California Academy of Sciences	🇺🇸 United States	In captivity
11	Antwerp Zoo	🇧🇪 Belgium	In captivity
12	North Carolina Zoo	🇺🇸 United States	In captivity
13	Australia Zoo	🇦🇺 Australia	In captivity
14	Cabarceno Natural Park	🇪🇸 Spain	In captivity
15	Ostrava Zoo	🇨🇿 Czechia	In captivity
16	Zoo Pilsen	🇨🇿 Czechia	In captivity
17	Greensboro Science Center	🇺🇸 United States	In captivity
18	Abilene Zoological Gardens	🇺🇸 United States	In captivity
19	Zoobotanic Park of Brusque	🇧🇷 Brazil	In captivity
20	Zoo Miami	🇺🇸 United States	In captivity
21	Lion Country Safari	🇺🇸 United States	In captivity
22	Toronto Zoo	🇨🇦 Canada	In captivity
23	Living Desert Zoo and Gardens	🇺🇸 United States	In captivity
24	Columbus Zoo and Aquarium	🇺🇸 United States	In captivity
25	Bronx Zoo	🇺🇸 United States	In captivity
26	Zoological Garden of Belo Horizonte	🇧🇷 Brazil	In captivity
27	Zoológico de Brasília	🇧🇷 Brazil	In captivity
28	Parque Zoobotânico de Teresina	🇧🇷 Brazil	In captivity
29	Ecological Center of Sonora	🇲🇽 Mexico	In captivity
30	Sedgwick County Zoo	🇺🇸 United States	In captivity
31	Omaha’s Henry Doorly Zoo and Aquarium	🇺🇸 United States	In captivity
32	Milwaukee County Zoo	🇺🇸 United States	In captivity
33	Los Angeles Zoo	🇺🇸 United States	In captivity
34	Parque Zoológico de León - Zooleón	🇲🇽 Mexico	In captivity
35	Dallas Zoo	🇺🇸 United States	In captivity
36	Phoenix Zoo	🇺🇸 United States	In captivity
37	Toledo Zoo	🇺🇸 United States	In captivity
38	Detroit Zoo	🇺🇸 United States	In captivity
39	Jacksonville Zoo and Gardens	🇺🇸 United States	In captivity
40	Cape May County Park & Zoo	🇺🇸 United States	In captivity
41	São Paulo Zoo	🇧🇷 Brazil	In captivity
42	Central Florida Zoo and Botanical Gardens	🇺🇸 United States	In captivity
43	Birmingham Zoo	🇺🇸 United States	In captivity
44	Louisville Zoo	🇺🇸 United States	In captivity
45	Guadalajara Zoo	🇲🇽 Mexico	In captivity
46	Audubon Zoo	🇺🇸 United States	In captivity
47	Oklahoma City Zoo and Botanical Garden	🇺🇸 United States	In captivity
48	Saint Louis Zoo	🇺🇸 United States	In captivity
49	Zoológico "Parque del niño" Jersey	🇲🇽 Mexico	In captivity
50	Burgers' Ocean	🇳🇱 Netherlands	In captivity

Show all 50 Show fewer

Rattlesnakes

Species in this group

Prairie Rattlesnake

Neotropical Rattlesnake

Southwestern Speckled Rattlesnake

Western Diamondback Rattlesnake

Panamint Rattlesnake

Western Rattlesnake

Sidewinder

Central American Rattlesnake

Timber Rattlesnake

Eastern Diamondback Rattlesnake

Red Diamond Rattlesnake

Eastern Black-tailed Rattlesnake

Dusky Rattlesnake

Rock Rattlesnake

Yucatán Neotropical Rattlesnake

Lower California Rattlesnake

Western Black-tailed Rattlesnake

Tiger Rattlesnake

Speckled Rattlesnake

Mohave Rattlesnake

Arizona Black Rattlesnake

Santa Catalina Island Rattlesnake

Tamaulipan Rock Rattlesnake

Totonacan Rattlesnake

Daily sighting probability by month

When they're spotted

Where to see Rattlesnakes

Parks Ranked

Cities Ranked

Zoos & Centres Where Found