Family

Viperidae

159 species · Animals

Animalia › Chordata › Squamata › › Viperidae

Southwestern Speckled Rattlesnake

Crotalus pyrrhus (Cope, 1866)

Crotalus pyrrhus is a variable-colored rattlesnake found in rocky habitats of the southwestern US and northwestern Mexico.

Tamaulipan Rock Rattlesnake

Crotalus morulus Klauber, 1952

Crotalus morulus is an ovoviviparous rattlesnake species with fluorescent rattles and distinct dark blotched patterning.

Speckled Rattlesnake

Crotalus mitchellii (Cope, 1861)

Crotalus mitchellii, the speckled rattlesnake, is a small North American desert rattlesnake with variable camouflaged patterning.

Tehuantepec Isthmus Neotropical Rattlesnake

Crotalus ehecatl Carbajal-Márquez, Cedeño-Vázquez, Martínez-Arce, Neri-Castro & Machkour-M'Rabet, 2020

Crotalus ehecatl is a large sexually dimorphic rattlesnake endemic to specific regions of Mexico.

Brazilian Lancehead

Bothrops moojeni Hoge, 1966

Bothrops moojeni is a defensive viviparous viper found across central South America in forest and savanna habitats.

Terciopelo

Bothrops asper (Garman, 1883)

Bothrops asper is a highly sexually dimorphic pit viper widespread across lowland to mid-elevation regions from eastern Mexico to northern South America.

Spotted Lancehead

Bothrops punctatus (Garcia, 1896)

Bothrops punctatus is a semiarboreal lance-headed pit viper found from Panama to northern Peru in moist and wet forests.

Common Lancehead

Bothrops atrox (Linnaeus, 1758)

Bothrops atrox, the common South American terrestrial pit viper, is a common non-endangered species that bears live young.

Jararacussu

Bothrops jararacussu Lacerda, 1884

Bothrops jararacussu, the jararacussu, is a large venomous pit viper found in forests across eastern South America.

Whitetail Lancehead

Bothrops leucurus Wagler, 1824

Bothrops leucurus is a terrestrial viviparous pit viper found along the Atlantic coast of eastern Brazil.

Marbled lancehead

Bothrops marmoratus Da Silva & Rodrigues, 2008

Bothrops marmoratus, the marbled lancehead, is a nocturnal viviparous viper species found only in Goiás, Brazil.

Osborne's Lancehead

Bothrops osbornei Freire-Lascano, 1991

Bothrops osbornei is a venomous viper species found in Ecuador and northwestern Peru.

Patagonia Lancehead

Bothrops ammodytoides Leybold, 1873

Bothrops ammodytoides is a stout venomous pitviper found only in Argentina that may be the world's southernmost snake.

Painted Lancehead

Bothrops diporus Cope, 1862

Bothrops diporus is an ovoviviparous sexually reproducing pit viper found along the Paraguay-Argentina border.

Urutu Lancehead

Bothrops alternatus Duméril, Bibron & Duméril, 1854

Bothrops alternatus is a highly venomous South American pit viper that is a major cause of snakebite across its range.

Jararaca Pintada

Bothrops neuwiedi Wagler, 1824

Bothrops neuwiedi is a South American pitviper with a defined scalation and color pattern, found in a range of forest and rocky dry habitats.

Yarará Lancehead

Bothrops jararaca (Wied-Neuwied, 1824)

Bothrops jararaca is a slender terrestrial venomous snake found in parts of South America, whose venom contributed to key medical drug developments.

Green Jararaca

Bothrops bilineatus (Wied-Neuwied, 1821)

Bothrops bilineatus is a small to medium South American viper with a green-based color pattern that lives in rainforest habitats near water, and is ovoviviparous.