17. Tropical rattlesnake, South American rattlesnake, Yucatan rattlesnake (Crotalus terrificus)
Tropical rattlesnake ranks 17th in our list of the most deadliest snakes in the world. This snake inhabits South American continent except Ecuador and Chile. It inhabits preferably more arid areas, rocky and stony deserts, savannahs and grasslands. It is rather a large and thick species, with an average body length of around 1.5 meters. It is recognizable by the two lighter lines that go from its head, which then turn into a zigzag pattern, which is lighter colored on the dark brownish background. A research has shown that they only represent 6-8% of the snake bites in Brazil, but have the highest mortality rate.
