Length: 6 to 8 feet
Location: Central Australia
Poisonous Effects: Regarded as the world's most deadly snake, the Inland Taipan's venom is as much as 400 times more toxic than most rattlesnakes and is reportedly able to kill a human with its poison in a mere 30 minutes. It's been estimated that the snake, which tends to wait for its prey to die before feeding, can kill up to 250,000 mice with just one bite.
Terrifying Tale: Though there haven't been any recorded human fatalities from the "Fierce Snake," one bite from this poisonous predator contains enough venom to kill approximately 100 people. In one remarkable story, the Inland Taipan, which was discovered in 1879, disappeared for nearly a century before reemerging in the 1970s. Australian snake expert Graeme Gow has been bitten by nearly 200 major toxic snakes and lived to tell about it. He has since become a medical marvel—scientists have tested his blood for his ability to withstand the venom, but the unofficial Snake Superman still could not completely defeat its fiercest competitor. "All the snakes that have ever bitten me have died, except one—the Inland Taipan," Gow told Australia's Northern Territory News.