Crotalus
The genus Crotalus (family Viperidae) has 59 species in SnakeList - 59 venomous and 0 non-venomous.
- Eastern Diamondback Rattlesnake Crotalus adamanteus venomous
- Mojave Rattlesnake Crotalus scutulatus venomous
- Prairie Rattlesnake Crotalus viridis venomous
- Sidewinder Crotalus cerastes venomous
- Timber Rattlesnake Crotalus horridus venomous
- Western Diamond-backed Rattlesnake Crotalus atrox venomous
- Arizona Black Rattlesnake Crotalus cerberus venomous
- Aruba Island Rattlesnake Crotalus unicolor venomous
- Autlán Long-tailed Rattlesnake Crotalus lannomi venomous
- Basilisk Rattlesnake Crotalus basiliscus venomous
- Black-tailed Rattlesnake Crotalus molossus venomous
- Campbell's Rattlesnake Crotalus campbelli venomous
- Cascabel Rattlesnake Crotalus durissus venomous
- Catalina Island Rattlesnake Crotalus catalinensis venomous
- Cross-banded Mountain Rattlesnake Crotalus transversus venomous
- Crotalus aquaticus venomous
- Crotalus caliginis venomous
- Crotalus lugubris venomous
- Crotalus muertensis venomous
- Crotalus potterensis venomous
- Eastern Black-tailed Rattlesnake Crotalus ornatus venomous
- Great Basin Rattlesnake Crotalus lutosus venomous
- Guerreran Long-tailed Rattlesnake Crotalus ericsmithi venomous
- Horsehead Island speckled rattlesnake Crotalus polisi venomous
- Isla Angel Rattlesnake Crotalus angelensis venomous
- Isla Piojo Speckled Rattlesnake Crotalus thalassoporus venomous
- Lower California Rattlesnake Crotalus enyo venomous
- Mexican Dusky Rattlesnake Crotalus armstrongi venomous
- Mexican Lancehead Rattlesnake Crotalus polystictus venomous
- Mexican Pygmy Rattlesnake Crotalus ravus venomous
- Mexican Smallhead Rattlesnake Crotalus intermedius venomous
- Middle American Rattlesnake Crotalus simus venomous
- Midget Faded Rattlesnake Crotalus concolor venomous
- Northwestern Neotropical Rattlesnake Crotalus culminatus venomous
- Panamint Rattlesnake Crotalus stephensi venomous
- Queretaran Dusky Rattlesnake Crotalus aquilus venomous
- Red Diamond Rattlesnake Crotalus ruber venomous
- Ridge-nosed Rattlesnake Crotalus willardi venomous
- Rock Rattlesnake Crotalus lepidus venomous
- San Esteban Island Rattlesnake Crotalus estebanensis venomous
- San Lorenzo Island Rattlesnake Crotalus lorenzoensis venomous
- Sinaloan Long-tailed Rattlesnake Crotalus stejnegeri venomous
- Southern Pacific Rattlesnake Crotalus helleri venomous
- Southwestern Speckled Rattlesnake Crotalus pyrrhus venomous
- Speckled Rattlesnake Crotalus mitchellii venomous
- Tamaulipan Rock Rattlesnake Crotalus morulus venomous
- Tancitaran Dusky Rattlesnake Crotalus pusillus venomous
- Tancitaro Rattlesnake Crotalus tancitarensis venomous
- Tehuantepec Isthmus Neotropical rattlesnake Crotalus ehecatl venomous
- Tiger Rattlesnake Crotalus tigris venomous
- Tlaloc's Rattlesnake Crotalus tlaloci venomous
- Tortuga Island Rattlesnake Crotalus tortugensis venomous
- Totonacan Rattlesnake Crotalus totonacus venomous
- Twin-spotted Rattlesnake Crotalus pricei venomous
- Uracoan Rattlesnake Crotalus vegrandis venomous
- Veracruz Neotropical rattlesnake Crotalus mictlantecuhtli venomous
- Western Dusky Rattlesnake Crotalus triseriatus venomous
- Western Rattlesnake Crotalus oreganus venomous
- Yucatan Neotropical Rattlesnake Crotalus tzabcan venomous