Hornets, wasps, and bees kill more people in the United States than any other animal. They account for roughly 31% of all animal-related fatalities, followed by livestock and other large mammals at about 29%, and dogs at about 26%. Together these three categories are responsible for more than 85% of the approximately 267 animal deaths recorded each year, a figure that may itself be an undercount. The animals Americans tend to fear most, like sharks, bears, and mountain lions, barely register in the data.
How the Numbers Break Down
A 2025 analysis of U.S. death records from 2018 through 2023 tallied 1,604 animal-related fatalities over that six-year window, averaging about 267 per year. The annual count rose from 227 in 2018 to 313 in 2023, an increase of roughly 38% and a statistically significant upward trend even after adjusting for population growth. The study estimated an annual increase in the fatality rate of about 6%. 1PubMed Central. Animal-Related Fatalities in the United States (2018-2023) – Section: Results
The three dominant categories were stinging insects (hornets, wasps, and bees), a broad grouping labeled “other mammals” that includes horses, cattle, and pigs, and dogs. Everything else combined, from venomous snakes and spiders to bears and alligators, fills the remaining sliver. That ratio surprises most people because the animals that dominate the death toll are either mundane or tiny, while the ones that dominate our nightmares are statistically negligible.
Why Stinging Insects Top the List
Bee, wasp, and hornet stings killed an average of 72 people per year during 2011 through 2021, with the annual count bouncing between 59 and 89 depending on the year. About 84% of victims were male. 2Centers for Disease Control and Prevention (CDC) / MMWR. QuickStats: Number of Deaths from Hornet, Wasp, and Bee Stings Among Males and Females — National Vital Statistics System, United States, 2011–2021 In the more recent 2018–2023 data, stinging insects accounted for 31% of all animal-related deaths, translating to roughly 80 or more fatalities per year as the overall total has climbed. 1PubMed Central. Animal-Related Fatalities in the United States (2018-2023) – Section: Results
The vast majority of these deaths result from anaphylaxis, a severe allergic reaction that can close the airway and crash blood pressure within minutes. A person who has never had a serious reaction to a sting can develop the allergy at any point in life, and many victims had no idea they were at risk. The male skew in the data likely reflects occupational exposure: outdoor workers such as landscapers, farmers, and construction crews encounter stinging insects far more often than people who spend most of their time indoors. Access to epinephrine auto-injectors and the speed of emergency response are the main variables that separate a painful sting from a fatal one.
Dogs and the Breed Conversation
Dog attacks are the third leading cause of animal-related death in the U.S., responsible for about 26% of fatalities in the 2018–2023 data. 1PubMed Central. Animal-Related Fatalities in the United States (2018-2023) – Section: Results Looking at the longer historical record, an older study covering 1979–2005 found an average of roughly 19 dog-attack deaths per year, with the rate increasing over time. Males and children under age 10 had the highest death rates. 3PubMed. Human fatalities resulting from dog attacks in the United States, 1979-2005 The recent data suggests the annual count has continued to climb, now averaging well above 60 per year.
The breed question dominates public debate whenever a fatal attack makes the news. A study examining fatal dog bites from 1979 through 1998 found that pit bull-type dogs and Rottweilers were involved in more than half of the 238 deaths recorded over that period. Most fatal attacks involved unrestrained dogs, with about 58% happening on the owner’s property and another 24% off it. 4PubMed. Breeds of dogs involved in fatal human attacks in the United States between 1979 and 1998 That study’s authors and subsequent researchers have cautioned that breed identification in attack reports is unreliable, owners of certain breeds may be more likely to raise dogs irresponsibly, and breed-specific legislation has not consistently reduced bite fatalities in jurisdictions that have tried it. The clearest risk factors across studies are not breed alone but a combination of circumstances: an unrestrained or unsupervised dog, a victim who is very young or elderly, and an owner who has not socialized or contained the animal.
Horses, Cattle, and the “Other Mammals” Category
The second-largest category in the mortality data, labeled “other mammals,” captures a grab-bag of species that accounted for roughly 29% of all animal-related deaths. Horses and cattle are likely responsible for most of the fatalities in this group, and livestock-related injuries are a well-documented occupational hazard. Prior research found that cattle were responsible for about 36% and horses for about 31% of occupational animal-related deaths. 5PubMed Central. Animal-Related Fatalities in the United States (2018-2023) – Section: Discussion
These deaths rarely make headlines because they happen on farms and ranches, away from media attention, and involve animals most people do not think of as dangerous. A cow can weigh over a thousand pounds, and a kick or a crush against a fence can be lethal. Horses cause fatal injuries through kicks, falls during riding, and being trampled. The victims are disproportionately agricultural workers, rodeo participants, and recreational riders. Because these deaths are treated as workplace or recreational accidents rather than “animal attacks,” they tend to be culturally invisible in a way that a fatal shark bite or bear mauling never is.
Deer and the Deadliest Indirect Threat
Deer do not attack people, yet they likely cause more human deaths each year than any wild predator in North America. The mechanism is vehicle collisions. There are an estimated one to two million deer-vehicle collisions in the U.S. annually, and they kill well over a hundred people a year. One modeling study estimated that switching to permanent daylight saving time could prevent about 33 human deaths and over 2,000 injuries per year simply by reducing the overlap between rush-hour traffic and the dawn-dusk hours when deer are most active. 6PubMed. Permanent daylight saving time would reduce deer-vehicle collisions That 33 represents only the portion of deaths the time change would avert, so the real annual toll is considerably higher.
Deer deaths often get classified under motor vehicle accidents rather than animal encounters, which means they do not show up in the same mortality databases used to count bee stings or dog bites. If you were to combine direct and indirect animal-related fatalities into a single ranking, deer would likely rival or surpass stinging insects for the top spot. Highway wildlife crossings, which funnel animals over or under busy roads, have been shown to reduce collisions where they are installed. A review of overpass structures worldwide found that wide overpasses of about 50 meters offer cost-effective solutions for reducing the barrier that highways present to wildlife and motorists alike. 7PubMed Central. Wildlife overpass structure size, distribution, effectiveness, and adherence to expert design recommendations
The Animals People Actually Fear
Sharks, bears, mountain lions, and alligators dominate the cultural imagination when people think about deadly wildlife. The actual numbers are remarkably small. Black bears killed 63 people across the U.S. and Canada over the entire span of 1900 to 2009, with 86% of those fatalities concentrated in the five decades between 1960 and 2009. Most fatal attacks involved solo individuals or pairs in remote settings, and adult or subadult male bears committed the overwhelming majority of predatory incidents. 8The Journal of Wildlife Management. Fatal attacks by American black bear on people: 1900–2009 That works out to roughly one death per year across two entire countries. Grizzly bear fatalities in the lower 48 states are similarly rare, averaging a handful per decade.
Alligators present an even lower risk. From 1928 through the start of 2009, there were 24 alligator-caused deaths in the entire United States. 9PubMed. Adverse encounters with alligators in the United States: an update As both alligator populations and human development in the Southeast have grown, nuisance encounters are increasing, but fatalities remain exceedingly uncommon. Shark attacks kill an average of about one person per year in the U.S., making them one of the rarest causes of animal-related death on record.
Venomous snakes, mostly pit vipers like rattlesnakes, copperheads, and cottonmouths, bite thousands of Americans each year, but deaths from snakebite are rare because of widespread access to antivenom. Treatment is expensive: one analysis of pit viper envenomation costs found post-treatment totals averaging above $55,000, and in some cases topping $70,000. 10PubMed. Cost comparison of F(ab’)2 and Fab antivenoms for pit viper envenomation in the United States: a real-world analysis The financial toll from snakebite is severe, but the death toll in the U.S. typically runs to only five or six people per year.
Bats, Rabies, and an Underappreciated Risk
Bats are the leading source of human rabies cases in the United States, responsible for roughly 70% of domestically acquired rabies infections between 1960 and 2018. 11PubMed. Notes from the Field: Three Human Rabies Deaths Attributed to Bat Exposures — United States, August 2021 In 2024, two people died of rabies after recognized bat encounters in Minnesota and California; in both cases, the individuals may not have understood the risk that a bat encounter posed. 12PubMed Central. Human Rabies Deaths – Minnesota and California, 2024 The confirmed number of rabies deaths each year, typically one to three, seems vanishingly small. But a provocative 2026 modeling study estimated that the true toll could be far higher: based on patterns of undiagnosed rabies discovered through organ and tissue transplantation, the researchers estimated that roughly 856 rabies deaths occurred in the U.S. between 2000 and 2024, meaning only about 7% of cases were actually confirmed. 13PubMed Central. Substantial under-detection of human rabies cases in the United States
If that estimate is even roughly correct, it would make bat-transmitted rabies a far more significant cause of death than official statistics suggest, on the order of 30 to 35 deaths per year rather than one or two. The finding is controversial and relies heavily on modeling assumptions, but it highlights a broader issue with how animal-related deaths are tracked. A bat bite can be so small that people do not realize they have been bitten, and once rabies symptoms appear, the disease is almost always fatal. The practical takeaway is that any direct contact with a bat, even waking up in a room where a bat was present, warrants a call to a doctor about post-exposure prophylaxis.
Why the Official Counts Are Probably Too Low
The way animal-related deaths get recorded introduces systematic undercounting. Death certificates use a system of cause-of-death codes, and when an animal encounter triggers a chain of medical complications, the animal may never make it onto the certificate. A study comparing two methods of analyzing death records from 1999 through 2016 found that the narrower method captured about 202 animal-encounter fatalities per year, while the broader method captured about 238, a difference of 18%. 14PubMed Central. Animal-Encounter Fatalities, United States, 1999-2016: Cause of Death and Misreporting When a person is kicked by a horse, develops a brain bleed, and dies a week later in a hospital, the death certificate might list the brain injury as the cause without ever mentioning the horse.
Deer-vehicle collisions, as discussed earlier, usually get coded as traffic accidents. Tick-borne diseases, which have been expanding geographically and growing in incidence over recent decades, contribute to an unknown number of deaths that are coded under the specific infection rather than attributed to the tick. 15PubMed. Tick-Borne Diseases in the United States And the potential underdetection of rabies suggests that some neurological deaths attributed to encephalitis of unknown origin may actually be undiagnosed animal-transmitted disease. Add these together and the true scope of animal-caused mortality in the U.S. is likely higher than any single database shows.
Why Our Fears Do Not Match the Data
There is a well-documented gap between which animals people fear and which actually pose the greatest threat. Research on the psychology of animal fear found that images of dangerous animals do trigger fear responses, but danger alone does not explain the pattern. Harmless animals also produced high fear scores, and genuinely dangerous ones sometimes did not. The researchers attributed the mismatch to social transmission of fear and a growing disconnection from natural environments. 16People and Nature. Danger versus fear: A key to understanding biophobia
In practical terms, a person living in suburban Texas is far more likely to die from a wasp sting in the backyard, a car collision with a deer on the commute, or a dog attack in the neighborhood than from a rattlesnake, alligator, or shark. The dramatic, predatory animals get outsized coverage because their attacks make compelling stories, while the mundane killers, stinging insects, livestock, and pet dogs, are woven so deeply into daily life that their danger feels invisible.
Urban Expansion and the Trend Line
The upward trend in animal-related fatalities is not a coincidence. As development pushes into previously rural and wild areas, the contact surface between humans and animals grows. More people are living in areas where deer cross roads at dusk, where coyotes wander through subdivisions, and where bee colonies colonize attic spaces. Wildlife-vehicle collisions, zoonotic disease transmission, and physical encounters all increase when urbanization creates more overlap between human and animal habitats. 17PubMed Central. The evolutionary consequences of human-wildlife conflict in cities
The bear-fatality data illustrates this neatly: across the entire 20th and early 21st century, there was a strong positive relationship between the number of fatal black bear attacks per decade and the human population of the U.S. and Canada during that decade. 8The Journal of Wildlife Management. Fatal attacks by American black bear on people: 1900–2009 More people living, hiking, and recreating in bear country means more encounters, even if bears themselves have not become more aggressive. The same dynamic applies at a larger scale to stinging insects, livestock, and deer. Climate change is compounding the trend by expanding the range of tick species and lengthening the active seasons for insects, which may drive the insect-sting death toll higher in coming decades.
For the average person, the most effective risk-reduction steps are unglamorous: carry an epinephrine auto-injector if you have ever had a serious reaction to a sting, supervise children around unfamiliar dogs, stay alert for deer at dawn and dusk on rural roads, and take any bat encounter seriously enough to consult a doctor. The animals that actually kill Americans are not lurking in the wilderness. They are in the garden, the pasture, and the road shoulder.