10) Cape Buffalo: The Capet buffalo, found in Africa, is sometimes called “black death". It is extremely aggressive and unpredictable. It can weigh between 900 to 1800 pounds. Herd members are quick to defend each other from lions, crocodiles, or hunters, by ramming the predator with their sharp horns. This species kills over 200 people a year.
9) Elephant: The largest land mammal, lives in Africa and some parts of Asia. Normally viewed as friendly, elephants have sometimes been known to exhibit unpredictable behavior and attack without warning. Wild elephants sometimes enter villages and do damage or crush people, and a person can also be trampled inadvertently by a herd moving past. Around 500 people die by elephants every year.
8) Hippopotamus: They are usually found in Africa and are responsible for more human fatalities on the continent than any other large animal. Male and female hippos tend to have different reasons for attacking. A male hippo will defend its territory, which runs along the bank of a river or lake, whereas the female becomes aggressive in defending her young.
7) Great White Shark: It eats a wide variety of species and isn’t too picky, but humans are not preferred, being leaner and bonier than its favorite prey—the fattier seals and sea lions.
Research shows that sharks explore objects with their mouths and will normally “test bite” something to see what it is. Many attacks on humans are thought to simply be these test bites. In the majority of cases, after the initial bite, the shark will retreat, though unfortunately, that first bite can often kill a person.
Of the more than 100 shark attacks every year, one-third to one-half are by great whites, and most of these are not fatal.
6) Saltwater Crocodrile: This is the largest reptile in the world. The saltwater and Nile crocodiles are the most dangerous, killing hundreds of people a year. The crocodile lives throughout the tropics of Africa, Asia, the Americas, and Australia in slow-moving rivers and lakes. It ranges from 5 to 20 feet long.
Its jaws can apply 3,000 pounds of pressure per square inch. Crocodiles kill up to 800 people every year.
5) Carpet Viper: Many species of snakes are dangerous to humans. More than 450 species are venomous, and 250 are capable of killing a person. Most venomous bites occur in Africa, Asia, and North America.
The Carpet Viper causes most of the snakebite deaths worldwide. Its poison can keep the victim’s blood from coagulating, and the person can bleed to death. The Inland Taipan or "Fierce snake" is the most venomous snake in the world, but there have been no fatalities. The venom itself is comprised of taipoxin, named after the snake. This is one of the most powerful natural toxins ever known, and stops the brain’s communication with the muscles, causing death by asphyxia. Antivenom is available, and the “fierce snake” is actually rather docile and reclusive, and lives in a remote area in Australia where few people encounter it.
4) Brazilian Wandering Spider: Meet the most venomous spider in the world, according to the Guinness Book of World Records. What makes this critter so dangerous though is also how it got its name – a tendency to wander.
They are often found hiding in houses and cars of densely populated areas, especially during daytime. Not a good combination. However, an effective antivenom is available and few fatalities occur.
3) Poison Dart Frog: Poison dart frog (also dart-poison frog, poison frog or formerly poison arrow frog) is the common name of a group of frogs in the family Dendrobatidae which are native to Central and South America. These species are diurnal and often have brightly colored bodies. The most poisonous of these frogs, the Golden poison frog (Phyllobates terribilis), has enough toxin on average to kill ten to twenty men or about ten thousand mice.
Most other dendrobatids, while colorful and toxic enough to discourage predation, pose far less risk to humans or other large animals.
2) Australian Box Jellyfish: Killing more people every year than sharks, crocodiles, and stonefish combined, this box of death has been labeled “world’s most venomous animal” Its venom is so potent in fact, its sting can kill a human. It can be found in Australia’s northern oceans and throughout the tropical Indo-Pacific. It has up to 60 tentacles, each growing as long as 15 feet. The tentacles are covered in cnidocysts, and each cnidocyst is equipped with a tiny needle and a load of toxin that, added together, could kill 50 people.
Most people survive an encounter with this jellyfish, but the pain is excruciating. It can stop a person’s heart or paralyze the person and cause drowning. Reports say this creature causes over 100 deaths a year, but records are sketchy. Reporting jellyfish deaths is not required by many countries, and many areas don’t want to publicize the presence of deadly jellyfish for fear of affecting tourism.
1) Mosquito: The females of many species of mosquitoes are blood-eating pests. In feeding on blood, some of them transmit extremely harmful human and livestock diseases, such as Malaria, Yellow fever, Dengue and Filariasis. Being responsible of more than 2 millon deaths each year it is fairly to say that mosquitoes are "the most dangerous animals on Earth".