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Rattlesnake Exploration Database

The Rattlesnake Conservancy Species Database is a tool that can be used by the public, researchers, government, private herpetoculturists, and the like to find information on the status of rattlesnakes in their state or country. This database is searchable by any field below. We are constantly updating this database, so if you see an error or missing data, please send us a message or email us at info@savethebuzztails.org

We are also developing an interactive map that shows the range of all known rattlesnake species in the New World (the Americas). 

Least concern - current information indicates this species is not in need of immediate conservation action to prevent extinction

Declining - current information indicates that this species is markedly declining due to various factors, such as rattlesnake roundups, climate change, indiscriminate killing, habitat destruction, fragmentation, lack of habitat management, and/or other natural and manmade features.

Crotalid of Special Concern - Species of rattlesnake that have been identified by TRC as needing proactive conservation measures to prevent becoming imperiled.

Imperiled - Species of rattlesnake that have an immediate threat of extinction or have a small endemic range without a resilient population.

Common name
Scientific name
Country(ies)
States of Occurrence
Panamint Rattlesnake
Crotalus stephensi
United States of America
California, Nevada
Sinaloan Long-tailed Rattlesnake
Crotalus stejnegeri
Mexico
Sinaloa
Red Diamond Rattlesnake
Crotalus ruber ruber
United States of America, Mexico
California, Baja California
Central American Rattlesnake
Crotalus simus
Mexico, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica
Chiapas (MX), Tabasco (MX),
Tancitaran Dusky Rattlesnake
Crotalus pusillus
Mexico
Michoacán, Jalisco, possibly extreme northwestern Colima
Western Twin-spotted Rattlesnake
Crotalus pricei pricei
United States of America
Arizona
Horsehead Island Speckled Rattlesnake
Crotalus polisi
Mexico
Baja California
Northern Pacific Rattlesnake
Crotalus oreganus oreganus
United States of America
California, Oregon
Tamaulipan Rock Rattlesnake
Crotalus morulus
Mexico
Tamaulipas, Nuevo-Leon, Coahuila
Northern Black-tailed Rattlesnake
Crotalus molossus molossus
United States of America, Mexico
Texas (US), New Mexico (US), Arizona (US), Sonora (MX), Chihuahua (MX) and Coahuila (MX)
Southwestern Speckled Rattlesnake
Crotalus pyrrhus
United States of America
California, Arizona, Nevada, Utah
Banded Rock Rattlesnake
Crotalus lepidus klauberi
United States of America, Mexico
Arizona (US), New Mexico (US), Texas (US), Chihuahua (MX), Durango (MX), Zacatecas (MX), Jalisco (MX)
Totalcan Small-headed Rattlesnake
Crotalus intermedius intermedius
Mexico
Hidalgo, Puebla, Veracruz, Tlaxcala
Isla San Esteban Rattlesnake
Crotalus estebanensis
Mexico
Sonora
Guerreran Long-tailed Rattlesnake
Crotalus ericsmithi
Mexico
Guerrero
Cerralvo Rattlesnake
Crotalus enyo cerralvensis
Mexico
Baja California Sur
Aruba Island Rattlesnake
Crotalus durissus unicolor
Netherlands (Aruba)
Aruba
Northwestern Neotropical Rattlesnake
Crotalus culminatus
Mexico
Michoacán, Morelos, Guerrero, Oaxaca, México, Puebla
Colorado Desert Sidewinder
Crotalus cerastes laterorepens
United States of America
Arizona (US), California (US), Baja California (MX), Sinaloa (MX)
Louse Island Speckled Rattlesnake
Crotalus thalassoporus
Mexico
Baja California

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Jacksonville, FL |  info@savethebuzztails.org  |  1-800-690-5638

© The Rattlesnake Conservancy, 501(c)(3) corporation

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