2. Puff Adder

Part of the Bitis genus, the puff adder is the most widespread species of venomous snake on the continent of Africa. It’s venom attacks cells, making it more dangerous than other types of venom. Its LD50 ranges from 1.32 to 2.0 mg/kg, and it typically yields 15-350 mg of venom. 100mg is enough to kill an adult male in 25 hours. Another reason the puff adder is so dangerous is its personality; it sits quietly when first approached but aggressive when confronted.

Venomous snakes puff Loura Duvenhage / Getty Images

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