This video excerpt from NOVA: “Venom: Nature’s Killer” shows how toxins from a venomous snake enter a victim’s body. Animations illustrate how venom that is stored behind a viper's eyes is pumped through its fangs into a victim's body where it targets the blood cells, ultimately leading the victim to bleed to death internally. In comparison, as noted in the video, venom from a krait or cobra affects a victim's muscles and nervous system, causing suffocation from paralysis of the lungs.
This video is available in both English and Spanish audio, along with corresponding closed captions.
Visit the program page here.