11. Horned viper, desert horned viper (Cerastes cerastes)
LD50: 0.1
Horned viper inhabits deserts and semi-arid regions of North Africa and the Middle East. It is a rather small snake, with the average body length of just around 30-60 centimeters. Horned viper is mostly recognized by its horns above eye ridges. They are usually lightly colored so that they can camouflage in sandy and arid environments they occupy. According to legend, this snake could have been responsible for Cleopatra’s theatrical death.