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Rattlesnakes are venomous snakes that form the genera Crotalus and Sistrurus [1] of the subfamily Crotalinae (the pit vipers). All rattlesnakes are vipers. Rattlesnakes are predators that live in a wide array of habitats, hunting small animals such as birds and rodents.
The Crotalinae, commonly known as pit vipers, [2] [3] or pit adders, are a subfamily of vipers found in Asia and the Americas. Like all other vipers, they are venomous . They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on both sides of the head.
Atheris hispida is a viper species endemic to Central Africa. Like all other vipers, it is venomous. It is known for its extremely keeled dorsal scales ("spikes") that give it a bristly appearance. [3] No subspecies are currently recognized. [4] Common names include rough-scaled bush viper, spiny bush viper, [5] [3] hairy bush viper, [3] [6 ...
The copperheads, cottonmouths, and timber rattlesnakes are the most common, venomous snakes that live in the Memphis Area. Small pygmy rattlesnakes are often found around Pickwick Lake.
There are several ways to identify venomous snakes, including pupil size, head shape and pattern. But in Pennsylvania, a good way to tell if one of the native snake species is venomous is the scales.
Crotalus lepidus is a venomous pit viper species found in the southwestern United States and northern central Mexico. Four subspecies are currently recognized, including the nominate subspecies described here. [3]
Glydius cognatus has previously been considered a subspecies of G. halys, and a synonym of G. brevicaudus and either G. strauchi or G. intermedius. [2] [4] It is now elevated to its own separate species, [5] and is theorised to have split from G. halys and G. intermedius during the pleistocene.
Atheris is a genus of vipers known as bush vipers. [2] They are found only in tropical subsaharan Africa (excluding southern Africa ) [ 1 ] and many species have isolated and fragmented distributions due to their confinement to rain forests . [ 3 ]