Lions and Tigers and Bears, Oh My! Which is the Most Dangerous to Humans?

Which is the most dangerous animal to humans; lion, tiger or bear? This has been a hot topic of debate for ages. While the king of the jungle sends chills down one’s spine by merely roaring, the ferocious eyes of the tiger can pierce through one’s soul.

But, certain other animals are more dangerous than lions, tigers, and bears. Keep reading if you don’t believe us.


You might  surprised to know that one of the smallest creatures on this Earth can snatch away a life. Mosquitoes are, in fact, very dangerous to humans. They are the carriers of many life-threatening parasites and viruses.

A single mosquito can cause malaria, dengue fever, yellow fever, Tularemia, Chikungunya, and many other fatal diseases.

If numbers are to be believed, these little creatures transmit a plethora of deadly diseases to around 700 million people every year. Annually, mosquitoes kill more than two million people. This is a surprising figure indeed. No lion, tiger, or bear could do that.


The venom of a scorpion can be deadly to humans. A person can lose their life due to a single scorpion sting.

There are several species of venomous scorpion, but not all are deadly. There are around 25 species that carry deadly venom.


Snakes are one of the most dangerous animals to humankind. Not all the species are hazardous, but 250 venomous species of snakes can kill humans.

Credit for causing the highest number of deaths goes to the Echis (venomous vipers). Rattlesnakes are also one of the most dangerous venomous snakes, and juveniles can be even more threatening. A death adder can lead to the death of a human being in six hours, whereas the bite of a black mamba can easily kill ten to fifteen adults.

Box Jellyfish

Albeit alluring, jellyfishes in reality are not that cute. In fact, they are quite deadly.

There are many venomous species of box jellyfishes, and some are known to cause death in less than 5 minutes.

Tsetse Fly

Another tiny creature that can kill humans is the tsetse fly. The small insect measures somewhere between 8 to 17 milometers and is found in sub-Saharan countries.

The flies suck blood, but what’s dangerous about them is the fact that they carry trypanosomes, a kind of protozoan parasite that can cause sleeping sickness. If no aid is provided, these parasites can cause death.

So, next time when you think of lions, tigers, bears or hippopotamus as scary, remember, the little insects that irritate us by their annoying buzz can be more dangerous than any of these.


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