Mosquitoes. Close-up of Mosquito (Aedes aegypti) sucking blood on human skin. The mosquito is the single deadliest, most dangerous animal in the world and also one of the smallest. Mosquitoes are estimated to cause between 750,000 and one million human deaths per year.
Hippopotamus (Hippopotamus amphibius)
Causing an estimated 500 deaths annually (as compared to only 22 for lions), hippos are deadly land mammals. This is because they are very aggressive and territorial, and have a habit of charging at boats and capsizing them.
Mosquitos are by far the deadliest creature in the world when it comes to annual human deaths, causing around one million deaths per year, compared to 100,000 deaths from snakes and 250 from lions. Perhaps surpringly, dogs are the third deadliest animal to humans.
Unexpectedly, the most deadly non-human animal is probably mosquitoes, claiming 750,000-1,000,000 people per year by carrying West Nile, Dengue, and Yellow Fever. Snakes are responsible for about 50,000-100,000 deaths each year, many of which occur in parts of the world that lack access to antivenom.
Four species of sharks account for the vast majority of fatal attacks on humans: the bull shark, tiger shark, oceanic whitetip shark and the great white shark.
While larger animals like sharks or hippos may seem a likely culprit, the animal that kills the most humans per year is actually the mosquito.
Hyenas. Although hyenas readily feed upon human corpses, they are generally very wary of humans and less dangerous than the big cats whose territory overlaps with theirs.
Man's best friend is actually one of the world's deadliest mammals. Worldwide, dogs are responsible for about 25,000 human deaths from rabies each year resulting from maulings and bites.
However, a 2015 study by the Mammal Review shows hippos “occasionally” feed on animal carcasses, a more omnivorous behavior. Hippos are known to attack and eat animals like wildebeests, zebras and kudus, as well as other hippos in cases of cannibalism, according to AZ Animals. They also steal meat from other predators.
There are a number of marine species that outlive humans, and the mammal species that holds the record for longevity is the bowhead whale, which can live for 200 years - or more.
The most catastrophic wipe-out on Earth didn't happen to the dinosaurs. A new study found extreme changes in the atmosphere killed almost 100% of life on Earth about 2 billion years ago.
Cardiovascular diseases
Cardiovascular disease is the top cause of death globally. In the map we see death rates from cardiovascular diseases across the world.
Said to be one of the most dangerous animals in Australia, the Saltwater Crocodile is an aggressive and territorial animal, and is the largest reptile in the world in terms of their mass – known to reach over 1000kg!
Dingoes are Australia's only native canid and play an important role as an apex predator, keeping natural systems in balance.
Aardvarks, aye-ayes, and humans are among the species with no close living relatives. There are 350,000 species of beetles—that's an awful lot of relatives.
Wild animals like lions, tigers, etc. cannot be tamed in the house as pet animals as they are wild by nature.
The shark was evaluated as the most-fear evoking of all the animals included in the present study.