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Rattlesnakes are the leading contributor to snakebite injuries in North America, but rarely bite unless provoked or threatened; if treated promptly, the bites are seldom fatal. The 36 known species of rattlesnakes have between 65 and 70 subspecies, [ 3 ] all native to the Americas , ranging from central Argentina to southern Canada.
Roughly 7,000–8,000 people are bitten by venomous snakes each year in the United States, and about five of those people die. [4] Though most fatal bites are attributed to rattlesnakes, the copperhead accounts for more snakebites than any other venomous North American species.
The timber rattlesnake, (Crotalus horridus), [192] is a species of venomous pit viper endemic to eastern North America. This is the only rattlesnake species in most of the populous northeastern United States and is second only to its cousins to the west, the prairie rattlesnake, as the most northerly distributed venomous snake in North America.
These snakes are large enough to defend their territory from intruders, including humans. [15] The black mamba, in particular, is among the most venomous snakes in the world and one of the most aggressive. It is the longest venomous snake on the continent and is able to move at 11 kilometres per hour (6.8 mph), making it unusually dangerous. [23]
This is a checklist of American reptiles found in Northern America, based primarily on publications by the Society for the Study of Amphibians and Reptiles (SSAR). [1] [2] [3] It includes all species of Bermuda, Canada, Greenland, Saint Pierre and Miquelon, and the United States including recently introduced species such as chameleons, the Nile monitor, and the Burmese python.
Of the 6 venomous snake species native to N.C., 3 are rattlesnakes – pigmy, timber & Eastern diamondback. Each one is protected by the North Carolina Endangered Species Act.
In North America, the females of some species store sperm in their oviducts for at least eight months, and the males (all species of which undergo spermatogenesis during the summer) store sperm in the vas deferens for at least a year. Thus, species that store sperm for a shorter duration mate in the spring and store sperm in the vas deferens ...
Timber rattlesnake, Crotalus horridus This is a list of all sure genera, species and subspecies of the subfamily Crotalinae, [1] otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes Crotalus and Sistrurus.