Hippopotamus
Though chubby and adorable as a plush toy, hippos are aggressive and territorial creatures who are built like tanks and don’t take any nonsense.
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Mosquito
Mosquitoes are hardy monsters that are difficult to see, capable of traveling long distances, able to lay their eggs just about anywhere, and deadly invasive.
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Blue Ringed Octopus
Each golf-ball sized blue ringed carries enough venom to drop more than two dozen people by paralyzing them.
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Tsetse Fly
The Tsetse carries loads of Trypanosomes, which are parasites that cause brain inflammation, loss of motor skills, and eventually death.
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Box Jellyfish
Many different varieties of Box Jellyfish exist, all of which are nasty beasts that bear the distinction of being the single most venomous creature in the world.
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Black Mamba
Though snakes in general should be avoided, since many of them carry various levels of venom, the Mamba is a particularly nasty customer.
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Cone Snail
There’s a shocking number of dangerous snails in the world, with this being the king daddy murderer of them all.
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Assassin Bug
Also known as the kissing bug because it bites on the face, Assassins carry Chagas disease, a parasitic infection that takes out thousands of people each year.
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Poison Dart Frog
The glands that produce the poison rest under their skin, meaning an accidental touch on their back can cause sickness or death.
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Polar Bear
Surprisingly fast on land, intensely deadly, smart and wily, and even quicker in the water, these great white beauties are serious predators.
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Cape Buffalo
Called “Black Death” for a reason, these buffalo are sweet and docile so long as they are left to their own devices.
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Ascaris Roundworms
A slithering creature that causes death by infection of ascariasis, roundworms like to make their home in the small intestine through ingestion of their larva.
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Siafu Ants
Siafu ants are known as “driver” ants because massive swarms of 50 million will act as a single mind, using the will of a single driver to guide their actions.
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Crocodiles
Subtle, lazy hunters that lounge around in the water, Crocs have the natural ability to blend into the environment and clamp down on unsuspecting prey with swift and deadly acuity
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Puffer Fish
Cute and cuddly in appearance, a little puncture from their puffed-out spines is enough to paralyze you for the remainder of your very short life.
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Deathstalker Scorpion
Small and vicious, they blend into their surroundings surprisingly well, and have a bite/sting first approach to life that usually means you’re dead before you know one’s around.
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Brazilian Wandering Spider
The Wandering Spider is a little more of a hassle, because it meanders around rather than knitting a web and then staying there.
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Stonefish
Subtle as an average rock, yet able to move with lightning speed when annoyed.
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PEOPLE
Causing more deaths than every other animal combined, nothing is more hazardous to your well-being than these oddly-shaped bipeds.
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