– This is how much black mamba venom it takes to kill a human. So ask yourself, who would be crazy enough to fight them? Honey badgers. It's always honey badgers. They don't give a- (owl hooting) Now they've got superpowers, right? Thick, loose skin and resistance to the neurotoxins in snake venom. Mongooses and some skinks are also resistant to snake venom. But snakes aren't the only venomous animals. The bark scorpion sting is one of the most venomous in North America. It's so painful, you'll wish you're dead, which it can also do. It can make you dead. But the four-inch long grasshopper mouse doesn't care. It uses that venom as a painkiller and then it eats the scorpion. That's metal. I think are pretty gnarly below the waves, too. There are leatherback sea turtles eating jellyfish because they have these spikes in their esophagus to protect them from the venomous stings of all that ouchie spaghetti. And pufferfish are full of this toxin called tetrodotoxin or TTX. And what's weird and pretty cool is pufferfish don't actually make that TTX. They get it from a bacteria that's part of their diet. A TTX is super toxic to humans. That's why you should only eat pufferfish if it's prepared by someone who knows what they're doing. And personally, I would probably think twice even then. Not only are pufferfish immune to TTX, they've made the deadly poison useful. Males seem to track it to find eggs to fertilize. And a mother pufferfish pass it on to their larva for protection. And scientists have found that young pufferfish are less aggressive when they're raised on a diet with TTX compared to those that don't get it. So the more toxic they are, the more chill they are. Maybe that makes them the most toxin-resistant animal on earth. What do you think? Let me know in the comments. Follow me for more cool science videos.