1 of 26 Blue Ring Octopus The Blue Ring Octopus is about the size of a golfball, but it packs enough poison to kill 26 people in a few minutes. This tiny killer's bite is so painless that most people don't even realize they've been attacked — until their bodies go numb, their eyes stop working, and the muscles needed to breathe completely shut down. OpenCage

2 of 26 Brazilian Wandering Spider The world's most poisonous spider doesn't just kill you, it makes your death as humiliating as possible. When this spider bites you, you can expect heart problems, hypothermia, convulsions, and if you're a man — a painful erection that just won't go away. Wikimedia Commons

3 of 26 Hyenas The worst way to die, according to animal expert Gordon Grice, is getting devoured by Hyenas. They don't bother killing their food. They'll just tear off your skin and face and start eating while you're still breathing and feeling every moment of it. Pixabay

4 of 26 Golden Dart Frog The Golden Poison Dart Frog doesn't even have to attack. Its skin is coated in a poison potent enough to kill 10 grown men. All you have to do is touch it to get infected. Wikimedia Commons

5 of 26 Cassowary The deadliest bird on earth is the Cassowary, a massive bird with talons strong enough to disembowel a human being. They'll do it too as these animals have been known to wander onto beaches and even into people's homes looking for food. If they don't get fed, they'll attack. One time, a cassowary knocked a man down and sliced open his jugular vein in one swift swipe. Wikimedia Commons

6 of 26 Inland Taipan The world's most poisonous snake, the Inland Taipan, is fifty times more toxic than the king cobra. When you get bitten by one of these, you only have about 30 minutes to get to the hospital before it's all over. Wikimedia Commons

7 of 26 Bullet Ant The most painful insect bite known to man is the sting of the bullet ant. When the bullet ant bites you, according to Dr. Justin Schmidt, it feels like getting shot. The bite then builds into a "tsunami of pain" that rises and falls throughout the body. Flickr

8 of 26 Deathstalker Scorpion This tiny, four-inch creature is the deadliest scorpion earth. If it stings you with its tail, fluid can build up in your lungs until you completely stop breathing. Wikimedia Commons

9 of 26 Saw-Scaled Viper The Saw-Scaled Viper might not be as poisonous as the Inland Taipan, but it's killed more people than any other type of snake on earth. These deadly creatures are all over Sri Lanka and Southern India, where they claim the lives of thousands of people every year. Wikimedia Commons

10 of 26 Stonefish The Stonefish isn't the world's prettiest fish, but it's the most dangerous. These fish have spines filled with venom that can stop a man's heart within 24 hours. Wikimedia Commons

11 of 26 Cone Snail These tiny, beautiful snails might look like beautiful decorations, but if you try to pick one up, harpoon-like teeth will lash out and bite your hand. Some call it the "Cigarette Snail" because if it bites you, you'll only have enough time to smoke a cigarette before you die. Wikimedia Commons

12 of 26 Box Jellyfish The most painful poison on earth, according to specialist Dr. Bryan Fry , belongs to the Box Jellyfish. When one of these things wrap their tentacles around your body, it feels like you're being "wiped with acid" and the pain doesn't go away for weeks. Wikimedia Commons

13 of 26 Pufferfish To humans, the Pufferfish is never more deadly than after it dies. If a cook doesn't prepare this fish to perfection, they'll be serving a plate of pure poison, which happens often enough that it kills between 20 and 44 people each year. Wikimedia Commons

14 of 26 Rhinoceros Not only is the Rhinoceros a massive, three-ton beast, it's also more likely to attack you that almost any other animal on earth. If a rhino thinks its children are in danger, it'll charge, moving at 35 mph with a three-foot horn pointed right at you. Wikimedia Commons

15 of 26 Elephants Elephants, according to Dr. Keith Hinshaw, are the most dangerous animals in the zoo. They'll hold grudges against their zookeepers. When they don't like someone, they have have been known to knock them to the ground and stomp on their heads. Wikimedia Commons

16 of 26 Cape Buffalo One of the deadliest hunts is the Cape Buffalo, an animal that kills about 200 people (mostly hunters) every year. When these massive beasts get attacked, they fight back, sometimes even toppling over moving vehicles to protect their children. Wikimedia Commons

17 of 26 Deer The deadliest animal in North America, believe or not, is the deer — nature's inadvertent kamikaze killer. An estimated 350,000 deer get themselves killed each year by bounding in front of moving vehicles. About 120 of those accidents end in the death of at least one of the person in the car. U.S. Air Force

18 of 26 Great White Shark The deadliest jaws on earth belong to the Great White Shark, a creature that bites down with about fourteen-times the strength of an adult, human man. Since 1907, those massive jaws have clamped down on and killed more than 220 people. Flickr

19 of 26 Champawat Tiger The single deadliest, man-eating animal in history was the Champawat Tiger. In the late 19th century, this one Bengal tiger dragged off and ate 436 people before finally being taken down by British hunter Jim Corbett. Wikimedia Commons

20 of 26 Hippopotamus Up until recently, hippos were the deadliest large animals on earth. They've calmed down a bit, but these massive creatures still kill about 500 people each year, chomping down on them with their 20-inch long teeth. Wikimedia Commons

21 of 26 Saltwater Crocodile Crocodiles are the deadliest large animals on earth, killing about 1,000 people each year. To make it worse, saltwater crocodiles also have the second most powerful jaws of any animal, biting down with nearly the exact same amount of force as the Great White Shark. Flickr

22 of 26 Ascaris Roundworm These little parasites will hatch their eggs inside of your intestines, burrow through your guts, and travel through your blood until they settle into your lungs. They're tiny enough that most people who have them don't even realize they're inside of their body but dangerous enough that they kill 4,500 people each year. Wikimedia Commons

23 of 26 Dogs The most dangerous pet on earth is your lovable, cuddly dog. Rabid dogs infect and kill about 25,000 people each year, most of them in India, where 20,000 people die of rabies annually. Wikimedia Commons

24 of 26 Tsetse Fly The tsetse fly is responsible for spreading the sleeping sickness across Africa. This disease the kills between 250,000 to 300,000 people each year. When one of these tiny flies infects you, you can expect horrible fevers, intense pain, and wild mood swings that will make you feel like you're losing your mind before you finally slip into a deep sleep and die. Flickr

25 of 26 Mosquitoes The common mosquito is responsible for more deaths than any other species, including humans. Each year, 725,000 people die from diseases like Malaria that are transmitted by mosquitoes. Flickr