Also known as the "fierce snake," the inland taipan has the most toxic venom of any snake.
Found in the waters of Australia and Southeast Asia, the box jellyfish's venom is extremely potent and can be deadly to humans.
Despite its small size, the blue-ringed octopus carries enough venom to kill several adults.
Found in the coastal regions of the Indo-Pacific, the stonefish is the most venomous fish known to man.
These marine snails are known for their beautiful shells but also for their potent venom, which can be deadly to humans.
While not all species of poison dart frogs are deadly, some carry enough toxins to kill a human.
Another species of cone snail, the marbled cone snail's venom is powerful enough to kill a human.
Found in North Africa and the Middle East, the deathstalker scorpion's sting can be deadly.
The pufferfish, also known as fugu in Japan, contains a potent neurotoxin in its organs that can be deadly if not prepared properly.
Considered one of the most venomous spiders in the world, the Brazilian wandering spider's bite can be lethal if not treated promptly.