Everything is bigger in the Amazon Rainforest. The land where dinosaurs used to roam, the rainforest is home to creatures that have evolved into terrifying killing machines — 500-pound snakes, dinosaur-age crocodiles and...giant river otters? Yep. They're all here, and they all want to kill you.
The Amazon Rainforest is only a bit smaller than the continental U.S., and it's located mostly in Brazil, Peru and Colombia. Even though rainforests only cover 7 percent of the Earth, they contain about half of the planet's species.
There are thousands of different species in the Amazon Rainforest — 40,000 plants, 2,200 fish, 427 mammals, 378 reptiles and countless insect species, many of which have yet to be catalogued...The following species are not only some of the most terrifying creatures in the Amazon, but in the entire world.
With human-like teeth, the pacu fish is an omnivorous fish with a strong jaw. They don't often attack humans, but there have been reports of pacu biting mens' testicles. So here's a bit of advice for swimming in the Amazon River: don't.
The largest snake in the world lurks in the Amazon River. At more than 30 feet long and weighing 500 pounds, the green anaconda kills by coiling itself around its prey, dragging it into the water and suffocating it. Then the snake eats the prey whole.
One of the most bizarre creatures lurking in the Amazon River is the electric eel, which can grow up to 8 feet long. They're able to shock prey with 650 volts. Fatal attacks on humans are rare, but there have been reports of people being shocked by eels and then drowning.
They may be beautiful, but the poison dart frog's bright color signifies lethal danger — poison. The poison in some is strong enough to kill 20 people.
There's a reason this croc has survived 85 million years without going extinct like its dinosaur counterparts — it's one of the most successful predators on Earth. And in the Amazon, it's one of the largest.
This tarantula can grow up to one foot long and, at least for females, can live up to 30 years. It preys on rodents, lizards, bats and birds. They're not lethal to humans, but a bite from one of these monstrous spiders can leave you nauseated and sick for days.
About 30 million people live in the region considered the Amazon Basin, in which the Amazon Rainforest comprises the majority of space. And while most of these people live in major cities, there are still thousands of indigenous people who live in the rainforest. Some of them have had no contact from the outside world at all.