What does a rattlesnake's venom do to the human blood?

fragrancemad/YouTube Though most snakes aren't venomous, the ones with a deadly bite are so scary that many researchers think humans evolved to ... The first move has got to be a terrifying thing to learn how to do — one man grabs the snake right below the head so he can control the creature. read more

Rattlesnake venom is a combination of both nerve killing (neurotoxin) and blood killing (hemotoxin). It simultaneously shuts your nervous system down causing your heart and breathing functions and general paralysis. read more

Watch what happens when one drop of Russell's Viper venom is mixed with a vial of human blood. warning: graphic content. Watch what happens when one drop of Russell's Viper venom is mixed with a vial of human blood. read more

In the video below, originally from a BBC production that's no longer available online, two men milk the venom of a Russell's viper and then show what happens when one drop of that venom mixes with a glassful of human blood. It's terrifying. read more