12. Common European viper, common European adder (Vipera berus)
LD50: 0.11
Common European viper ranks 12th in our list of the 20 most venomous snakes in the world. This is a widespread species that inhabits most of Europe, throughout Eurasia to Eastern Asia, and can be found in many habitats, preferably with wetter conditions – mountains, meadow forests, forest-steppes, etc. It is a relatively small species, with an average body length of around 50 centimeters. Coloration depends on geographical region but can be recognized by the zig-zag pattern on its dorsal (back) side. The pattern is darker colored than the base color, which can vary from very light and gray hues to almost completely black when the pattern is barely visible or absent.
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