Amazon rainforest is located in South America, covering an area of 5.5 million square kilometers, spanning 9 countries, accounting for one-fifth of the global forest area. It is known as the "lung of the earth" and the "world animal and plant kingdom". Most of the Amazon rainforest is located in Brazil, where there is abundant precipitation, lush plants and tall trees cover the sky. Looking at the rainforest from the air, it is lush and green.

Contrary to the description of the Amazon rainforest in the Hollywood movie Anacondas, most animals here don't deliberately kill people. However, the rainforest is full of self-defense and aggressive creatures.

The unique hot and humid environment in the tropical rain forest is a paradise for snakes, among which there are many huge snakes, such as Amazon boa constrictor, which is called the heaviest snake in the world, with the heaviest weight of 225 kilograms and the longest body length of 10 meters. Generally, boa constrictor is only about five meters long. However, in front of human beings, they still exist like giants, Amazon boa constrictor.

In addition, there are dozens of hundreds of kinds of poisonous snakes, such as vipers, stingers and butterflies, which can be said to be dangerous everywhere.

There are not only poisonous snakes on land, but also poisonous spiders, poison dart frogs, all kinds of poisonous insects, poisonous scorpions, etc. Even some ants are highly toxic, such as the bullet ant. Don't underestimate this bullet ant. The bullet ant was once rated as "the top ten most poisonous animals in the world" and is also one of the largest ant species in the world.

Many people think that giant pythons and boa constrictors are the scariest, but they don't know that in the Amazon rainforest, piranhas are the scariest, because piranhas are animals that act in groups, and they can eat all the buffaloes that fall into the water in an instant. If people accidentally fall into it, only a pile of bones can be left in a moment.

Of course, piranhas are powerful, but there are also "nemesis". In the Amazon basin, electric eels are one of the nemesis of piranhas. Electric eels can instantly release high-voltage electricity close to 1000 volts from their bodies. Because they conduct electricity in water, once they release voltage, it will cause extensive damage, which is why electric eels can restrain groups of piranhas. The powerful current that can electrocute adult crocodiles is difficult to survive if it is encountered by people.

Outsiders are particularly vulnerable to illness in the Amazon rainforest, and the biggest threat comes from mosquitoes carrying malaria and yellow fever. These two diseases are very serious, so you should be vaccinated properly before going to Amazon.

Even relatively clean food and water sometimes contain different kinds of bacteria and microorganisms, and the immune system of foreigners is not used to dealing with these, which will lead to fever, diarrhea and dehydration.

Although it is a forbidden area for human beings, it is for the vast majority of ordinary people, but now there are still a large number of researchers entering here to explore the secrets here. The Amazon jungle is not completely deserted. As can be seen from the pictures taken by helicopters, there are still primitive tribes living in the primitive rainforest. From their clothes and eyes, these tribes are truly isolated.