Boomslang
Customarily based in South Africa, the Boomslang is lightning fast, can climb trees, and has a bite brimming with venomous toxins. Oh yeah, they also have extraordinary Superman-like eyesight and can move their heads in an Exorcist-like motion to gather a better view of objects directly in front of them. Just nope to all of the above.
Peron’s Sea Snake
Might be best to avoid that cheap flight to the Gulf of Siam, the Strait of Taiwan, and the Coral sea islands. Why? Because that’s the home of the Peron’s Sea Snake whose bite is filled with enough venom to kill you in minutes. Plus it’s the only sea snake that has spines on its head.