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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.
Common names: red diamond rattlesnake, red rattlesnake, red diamond snake, [3] more. Crotalus ruber is a venomous pit viper species found in southwestern California in the United States and Baja California in Mexico. Three subspecies are currently recognized, including the nominate subspecies described here. [4]
Although venomous, eastern copperheads are generally not aggressive and bites are rarely fatal. [38] Copperhead venom has an estimated lethal dose around 100 mg, and tests on mice show its potency is among the lowest of all pit vipers, and slightly weaker than that of its close relative, the cottonmouth. [39]
This snake was found on the edge of a creek in Oklahoma. Agkistrodon piscivorus is a species of venomous snake, a pit viper in the subfamily Crotalinae of the family Viperidae. It is one of the world's few semiaquatic vipers (along with the Florida cottonmouth), and is native to the Southeastern United States. [5]
The United States has about 30 species of venomous snakes, which include 23 species of rattlesnakes, three species of coral snakes, and four species of American moccasins. Although at least one species of venomous snake is found in every state except Hawaii, Maine, Rhode Island and Alaska, the vast majority are found in warm weather states.
Crotalus viridis (Common names: prairie rattlesnake, [3] [4] Great Plains rattlesnake, [5]) is a venomous pit viper species native to the western United States, southwestern Canada, and northern Mexico.
Pit vipers of the genus Agkistrodon rely on a potent venom they produce for their survival. Used to immobilize prey and fend off predators , one bite can inject enough venom into a human to cause severe pain, swelling, weakness, difficulty breathing, hemorrhaging, gangrene, fever, vomiting, and in rare instances, even death.
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.