2. Black Mamba

Or black-mouthed mamba is another one of the most venomous snakes in the world. There’s a reason why Uma Thurman’s character in Kill Bill was codenamed Black Mamba after all. Apart from being one of the most dangerous, it’s also one of the fastest moving too. The venom of the Black Mamba is made up of neurotoxins, mostly dendrotoxins, that can make humans collapse in 45 minutes, and without antivenom, a human can die within 7 to 15 hours. But, despite it being known to be a very aggressive snake, it usually tries to flee from humans whenever it’s threatened or cornered.