Saltwater Crocodile

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Saltwater crocodiles are scary and dangerous, and they kill more people each year than sharks do. These animals reside in the waters of the Indo-Pacific and sometimes make it as far south as Australia. Their bites are as strong as those of the T. Rex. Even though they are termed "saltwater" crocodiles, they can also swim in freshwater, which makes them very swift, scary, and dangerous.
Tsetse Fly

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The tsetse fly is thought to be the most hazardous fly in the world, however it is only as big as a typical housefly. This fly is the most harmful in the world, even though it is small. It is found in Sub-Saharan Africa. They suck blood from people, just like mosquitoes do, and they can spread diseases like the parasite Trypanosomes. This parasite is what causes African Sleeping Sickness, a sickness that affects the neurological system and makes it hard to sleep. There are no vaccines or medicines for this condition, and it can kill you. Wearing clothes that aren't too bright and staying away from bushes throughout the day are two things you can do to stay safe.
Mosquito

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The mosquito is one of the smallest animals and is also the second deadliest on our list. It may be found all around the planet. These annoying bugs, like the Tsetse Fly, carry a lot of terrible diseases, including Chikungunya, encephalitis, elephantiasis, yellow fever, dengue fever, West Nile virus, and the Zika virus. These diseases kill about 725,000 people per year and afflict almost 700 million people. The World Health Organization says that roughly half of the people in the world are at risk of having a disease that a mosquito can spread.
Humans

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We, as humans, come in at number one. Even while all of these animals are hazardous, the truth is that we are the most dangerous to ourselves. War has killed between 150 million and 1 billion people throughout the years. Even though we are living in one of the most peaceful moments in history, random violence and attack nevertheless cut countless lives short in terrible ways. Nuclear war may also wipe out all life on Earth, which means that animals have more to fear from us than we have from them.
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