The wet areas of the Amazon are home to one of the largest non-venomous snakes, the green anaconda. It is the world’s heaviest and one of the longest snakes, growing up to 5.21 m. It is characterized by its olive green shade, with black spots along the length of its body and a distinguishing yellow stripe on one side.
These spooky critters can see what lurks outside of the water while staying almost entirely submerged, allowing them to wait sneakily for their next meal. They live in swamps, marshes, and slow-moving streams, mainly in tropical rainforests. They kill by constricting their prey and swallowing it whole. While you wouldn’t be their first choice of dinner, it’s recommended you steer clear.
Polar Bear
These animals will eat anything in sight that has meat on it. They don’t usually kill humans, but this is probably because they live far out of reach. These mammals live within the Arctic Circle and spend many months of the year on sea ice, hunting seals.
They may seem cute on TV, but don’t let their looks fool you; these creatures will tear you apart. They weigh around 350-700 kg and can cover many miles on foot and run on land thanks to their large limbs and feet.
Mata Mata Turtle
The Mata Mata turtle is often referred to as the weirdest turtle on earth. These turtles are quite big and can reach up to two feet in length.
When a small sea creature gets close enough to the Mata Mata turtle, it simply opens its mouth, sucks it in, and bites down on it quickly, ensuring a fantastic meal. Don't think it won't do the same to you if you get too close.
Mediterranean Black Widow
Just by looking at it, you can tell that this spider is ten times more dangerous than the original Black Widow. This arachnid, with its crazy design and large venom glands, is much deadlier than the original Black Widow. You do not want to be by this tiny but very deadly arachnid, especially the female spiders, as their unusually large venom glands are extremely harmful, specifically to humans. You can distinguish the female from its male counterpart by its dark brown or glossy black color with a red/orange hourglass shape on its bellies.
And don’t let its name fool you into feeling sorry for it. Their names come from the practice of females eating males after mating. Males usually select their female partners by sensing chemicals in the web that tell them whether the female has eaten already.
Millipede
The dangerous relative of the centipede, humans luckily don’t have to worry much about this animal. They pose more of a danger to ants and other larger predators by burning through their external skeleton and irritating the predator’s skin and eyes. They do this by excreting poisonous liquid or cyanide gas through their pores.
They are found in all continents except for Antarctica, even in such areas as the Arctic Circle. They usually live in leaf litter, dead wood, or soil and have a preference for humid temperatures. In various cultures, millipedes are associated with special powers — they are used to treat certain illnesses and in business rituals. While they aren’t dangerous to humans, native people in Malaysia do use millipede secretions in poison-tipped arrows… so be aware.