Middle American rattlesnake

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Found from northern Mexico to Central America, it was only separated by herpetologists from the South American Tropical Rattlesnake (Crotalus durissus) in 2004. Unlike its South American relative, but in common with most other rattlesnake species, its adult venom is primarily haemotoxin, rather than neurotoxin. It stands out among other Mexican Rattlesnakes for the twin stripes running from the back of its head down a portion of its body, and its unusually rough-looking scales. Rattlesnakes were revered by the Mayans and Aztecs.

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Eyelash palm viper

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There are a number of small Tropical American prehensile-tailed, tree-dwelling pit vipers, but many of them have small distributions and are very rare. This species is found all the way from southern Mexico well into South America and is one of the more likely tropical American vipers to be seen in captivity, where it breeds well. Its name comes from the pointy scales above its eyes. It is famous for its many color phases. Orange ones are especially popular in zoos.

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Central American fer-de-lance

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One of the most infamous of the world’s venomous snakes, this species is the leading snakebite species in its habitat. It is found from southern Mexico down to Northern South America. Like rattlesnakes, cottonmouths, and copperheads, it is a pit viper, equipped with heat sensing organs in a cavity between their eyes and nostrils. Females grow much larger than males, weighing more than ten pounds, and have bigger heads and longer fangs. The haemotoxic venom causes severe tissue damage, and many fatalities have been recorded.

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