Fangs of The Russell's Viper | Snakes SOS: Goa's Wildest | National Geographic 

With the help of its long fangs that are folded up against its upper jaw, the Russell's Viper injects venom on its victims which starts to affect their internal organs within 5 seconds. Explore more fascinating facts about snakes with Ben and Louise on Snakes SOS: Goa's Wildest, on National Geographic. #NatGeoAdventure
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