South American Rattlesnake
Scientific name: Crotalus durissus
Subfamily: Pit vipers
Length: Up to 5.9 ft (1.80 m)
The South American rattlesnake is the only rattlesnake that is mostly found in South America. It’s found in Mexico, Columbia, Venezuela, Brazil, Bolivia, Paraguay, Argentina, Peru and Guyana. They are the most venomous of all the rattlesnakes. As there are lots of different kinds of South American rattlesnake, the composition and effect of their venom varies a lot. The South American rattlesnake crotalus durissus terifficus is especially feared. While a bite from other kinds is often easy to treat, the likelihood of dying from this particular snake’s venom is up to 75 % (if not treated). Their venom is also known for causing vision problems and (permanent) blindness.