TheDeadliestAnimalsDanger Often Has No Teeth

The shark. In 2025, the University of Florida's International Shark Attack File counted nine deaths in unprovoked attacks across the entire planet. Three were Australian surfers killed by white sharks. The same registry ran the numbers for the United States: an American is more likely to die from fireworks than from a shark. The Fourth of July is more dangerous than Jaws.

The wolf. A Norwegian inventory of wolf attacks found only twenty-six fatal attacks worldwide over nineteen years, fourteen of them caused by rabid wolves. The risk, the report concludes, is "above zero, but far too low to calculate." Little Red Riding Hood can walk through the woods; she would do better to watch out for her grandmother's dog.

The elephant and the hippopotamus. The hippopotamus, a staple of "deadliest animals" lists, kills far fewer people than elephants or big cats, according to Our World in Data. Elephants, for their part, killed 628 Indians in 2023, according to figures presented to Parliament.

The crocodile and the hippopotamus. The crocodile is the great missing entry in numerical rankings, for lack of a reliable global figure. The CrocBITE database, which records only reported and verified attacks, tallies more than 1,600 deaths from 2010 to 2020, including 696 for the Nile crocodile and 668 for the saltwater crocodile. The IUCN Crocodile Specialist Group, which publishes these numbers, warns that they are underestimates: many attacks happen in remote areas, and a death is much more likely to be reported than an injury. The hippopotamus, meanwhile, has two conflicting figures. National Geographic credits it with roughly 500 deaths a year across Africa, "nearly twice" the toll of lions.

The scorpion. It stings more than a million people a year and is estimated to kill more than 3,250, according to the most recent global appraisal, which dates from 2008. Adults are stung most often, yet children suffer the most severe envenomings, and mortality is highest among them.

With these three, the animal no longer kills on its own. It delivers something else.

The kissing bug. In Latin America, the triatomine bug hides during the day in cracks in walls and roofs and comes out at night to feed on blood. Its feces transmit the parasite of Chagas disease, carried by roughly eight million people. Years later, up to a third of patients develop heart damage that can stop the heart without warning: more than 10,000 deaths a year. The kissing bug is one of the rare killers in the ranking that kills on credit.

The snail. It has neither fangs nor venom. This small freshwater snail releases the larvae of a parasitic worm that penetrate the skin of anyone who steps into the water: the woman washing clothes, the child, the farmer, the fisherman. The worm's eggs lodge in organs and slowly damage them. Schistosomiasis causes rouge:roughly 14,000 deaths a year, and more than 250 million people required preventive treatment in 2024.

Dog in the terminal stage of paralytic rabies (1963)

CDC, public domain

The dog. Man's best friend is the source of 99% of human rabies cases. Once symptoms appear, rabies is virtually 100% fatal; beforehand, the virus can be stopped by washing the wound with soap and water for fifteen minutes, getting vaccinated without delay, and, after a deep bite, receiving rabies immunoglobulin. Yet that treatment cost an average of $108 in 2018, when many affected families live on one or two dollars a day. Rabies kills more than 44,000 people a year according to the WHO's 2021 model, mainly in Asia and Africa, and four in ten are children under fifteen. Our World in Data, which the table follows, attributes roughly 40,000 deaths to dogs in 2023: two estimates, the same order of magnitude.

A coiled rattlesnake with its rattle raised, engraved for Albert Calmette's treatise on venoms and antivenom serotherapy (1908)

Internet Archive Book Images, public domain

Every year, roughly five million people are bitten by a snake, and 81,000 to 138,000 die from it, according to the WHO. It is not the jungle adventurer who dies: it is agricultural workers, children, and women in poor rural communities across Africa, Asia, and Latin America. Many die without anyone counting them, and the global death toll from snakes remains surprisingly uncertain.

Antivenom has existed for more than a century. Yet the price of some products has soared over the past twenty years, to the point that most of those who need it can no longer afford it: the cure is old, it is the patient who cannot pay. Only in June 2017 did the WHO formally list snakebite envenoming among the highest-priority neglected tropical diseases.

Female Anopheles albimanus, a malaria vector, taking a blood meal (2005)

CDC / James Gathany, public domain

On the second step of the podium stands an animal nobody expected to see there: us. Roughly 600,000 of us were killed by other humans in 2023. We are also the only species on the list to have written the ranking.

Above us stands a female. It is the female mosquito that bites, because she needs blood to produce her eggs; the Anopheles mosquito, which transmits malaria, usually bites late in the evening or at night. She bears us no malice. She is starting a family.

Malaria killed 610,000 people in 2024 according to the WHO—more than one person a minute. About 95% of those deaths occur in Africa, and there, three out of four victims are children under five. Her cousin Aedes aegypti bites during the day, in towns and cities, and transmits dengue: in 2024, a record year, more than 12,000 deaths were reported.

In 2019, historian Timothy Winegard wrote that the mosquito had killed roughly 52 billion humans—nearly half of all human beings who have ever lived. The claim had already been circulating, and as early as 2013 the BBC program More or Less judged it probably false: a researcher at the Liverpool School of Tropical Medicine estimated there, partly by informed guesswork, that 4 or 5% of humans died of malaria from 1900 going back through history—nowhere near half. The mosquito needs no exaggeration to stay in first place.

Prevention and treatment, for their part, have proven their worth: since 2000, 14 million malaria deaths have been averted.

Why do we tremble before the shark and not before the mosquito? Our World in Data answers with exposure: a large predator can be avoided; an insect that flies into a bedroom at night cannot.

The rest comes down to money. Bed nets, insecticide, rabies vaccine, antivenom, clean water: most of the remedies for this ranking already exist. Those who die from the mosquito, the dog, and the snake do not die for lack of a cure, but because the cure never reaches them.