When we discuss the looming wave of species loss, the conversation usually centers on protecting the vulnerable. Yet, a handful of organisms are so harmful to human health or agriculture that scientists and governments are deliberately planning their disappearance. This roundup of the 10 animals humans are pushing toward extinction on purpose walks you through each target, the tactics being used, and the ethical dilemmas that come with erasing a species.
10 Animals Humans Target for Eradication
Below you’ll find a numbered list of the ten organisms that have become the focus of coordinated eradication campaigns. The list is ordered from the most controversial to the most unexpected, and each entry includes the latest methods being deployed, the potential ecological fallout, and a snapshot of the science driving the effort.
10 Mosquitoes
If you have ever daydreamed about a world free from the high‑pitched whine and itchy bites of mosquitoes, you’re not alone. These tiny blood‑sucking insects do far more than annoy us; they serve as vectors for deadly pathogens, most notably the malaria parasite that afflicts roughly 216 million people each year, predominantly across sub‑Saharan Africa.
The primary malaria carrier is the Anopheles gambiae mosquito. For three decades, researchers have toyed with the notion that wiping out the mosquito could eliminate malaria. Recent breakthroughs in gene‑editing have finally offered a plausible route: scientists at Oxford University have engineered a strain of A. gambiae that carries a dominant gene rendering females infertile.
Releasing these modified mosquitoes into the wild would see them mate with native populations, spawning successive generations lacking the ability to reproduce. Over time, the infertility gene could sweep through the gene pool, potentially eradicating the species on a continental scale. However, many ecologists caution that removing a species can trigger cascading effects, such as depriving predators of a food source, and note that the long‑term ecological consequences of gene‑driven extinction remain uncertain.
9 Guinea Worm
The dreaded parasite Dracunculus medinensis, commonly known as the Guinea worm, lives up to its gruesome moniker. Its larvae infiltrate humans through contaminated drinking water sourced from lakes, rivers, or ponds. Once inside the digestive tract, male and female larvae traverse the intestinal lining, mate, and the male dies while the female settles just beneath the skin, often in the lower leg.
The female can grow up to 76 cm (30 in) long. About a year after infection, she creates a painful blister that eventually ruptures, allowing the worm to emerge inch by inch over days or weeks. The afflicted person typically immerses the wound in water, causing the worm to release thousands of eggs and perpetuate the cycle.
Since the 1980s, the World Health Organization has spearheaded a global eradication program. By 2017, reported cases had plummeted to just 30, thanks to active case treatment, distribution of water filters, and public education about safe drinking practices. Nevertheless, the worm has resurfaced in dogs, suggesting that total extinction may remain out of reach for now.
8 Wuchereria Bancrofti
These thread‑like roundworms, spread by mosquito bites, can reach lengths of up to 10 cm (4 in). Adult worms take up residence in the lymphatic ducts of human hosts, where they cause blockages that lead to the disfiguring swelling known as elephantiasis—affecting limbs, breasts, or testicles.
According to the WHO, an estimated 120 million people worldwide suffer from this condition. The species Wuchereria bancrofti is the most common cause of elephantiasis and is uniquely human‑specific. Consequently, eliminating the parasite in humans would equate to wiping out the species entirely.
Since 1997, the WHO has pursued mass drug administration campaigns, delivering annual deworming treatments across sub‑Saharan Africa and Southeast Asia. To date, 40 of the 73 endemic countries are on track to achieve full elimination, marking a significant stride toward the worm’s possible extinction.
7 New World Screwworm
The New World screwworm represents the larval phase of a fly species whose name alone may not inspire sympathy. Female flies lay eggs near open wounds on warm‑blooded hosts; once hatched, the larvae burrow into flesh, creating painful lesions.
Historically, the screwworm roamed the tropical and subtropical regions of North and South America. In 1972, a joint United States‑Mexico effort eradicated the pest within their borders using the sterile insect technique (SIT). In this method, male flies are irradiated in the lab—rendering them sterile—and then released into the wild, where they mate with females but produce no offspring, causing rapid population collapse.
The U.S. maintains a laboratory on the Colombia‑Panama border that continues to release sterile males, preventing re‑establishment northward. However, a 2016 outbreak in deer on the Florida Keys reminded scientists that the screwworm remains a lingering threat, underscoring the need for ongoing vigilance.
6 Pubic Lice
Although there is no coordinated global campaign to wipe out pubic lice—also known as “crabs”—recent observations suggest their numbers are dwindling, likely keeping them off any future protection lists. These tiny insects belong to the same family as head lice but have adapted to live solely on coarse body hair in the armpit and genital regions.
Transmission occurs primarily through sexual contact, as the lice feed on blood and cause intense itching. Over the past decade, researchers have noted a decline in reported infestations, attributing the trend to modern grooming habits such as shaving and waxing, which reduce the available habitat for the parasites.
Nonetheless, some experts argue that the apparent drop could stem from increased access to over‑the‑counter treatments similar to those used for head lice, rather than an actual threat of extinction. The scientific community remains divided on whether pubic lice face imminent disappearance.
5 Onchocerca Volvulus
The parasitic worm Onchocerca volvulus spreads through the bite of black flies that breed near rivers and streams across Africa, parts of Latin America, and Yemen. Infection—commonly called river blindness—causes severe skin itching and can scar the cornea, leading to permanent blindness.
The Carter Center has spent the past two decades partnering with local governments to combat this disease. Their main weapon is ivermectin, a drug that kills the worms within human hosts and halts transmission.
While eradication efforts have been remarkably successful in South America, where river blindness is now virtually gone, Africa still accounts for 99 % of global cases. The WHO estimates that roughly 18 million people remain affected worldwide, indicating that total extinction of the parasite remains a distant goal.
4 Hookworms
Hookworms infiltrate human hosts either by ingestion of contaminated vegetables or, more commonly, through skin penetration when people walk barefoot on contaminated soil. Once inside, the larvae travel via the bloodstream to the lungs and eventually settle in the intestines, where they feed on blood, causing anemia and chronic diarrhea.
Although once prevalent throughout the southern United States, extensive public‑health campaigns in the early 20th century dramatically reduced their presence. Today, hookworms persist in impoverished tropical regions, thriving in areas lacking proper sanitation.
Eradication strategies focus on improving sewage infrastructure, distributing deworming medication, and promoting footwear use. By addressing the environmental reservoirs and providing regular anthelmintic treatments, health officials aim to drive the species toward extinction.
3 Tsetse Flies
Tsetse flies, tiny blood‑sucking insects, transmit the parasite responsible for African sleeping sickness—a disease that produces fever, confusion, weakness, and often death if untreated. Beyond human health, the flies also infect livestock such as cattle, pigs, and donkeys, hampering agricultural productivity and deepening poverty in sub‑Saharan Africa.
The United Nations identifies the tsetse fly as a major driver of economic hardship, as its presence forces farmers to leave fertile land fallow. Traditional control methods—pesticides, traps, and culling of wildlife that serve as hosts—have yielded limited success.
The most promising approach is again the sterile insect technique, wherein radiation‑sterilized male flies are released en masse to outcompete fertile males, leading to a collapse in the breeding population. Continued deployment of SIT could eventually eradicate the fly from entire continents.
2 Bedbugs
Bedbugs are small, wingless insects that hide in mattresses, bedding, and furniture, waiting for unsuspecting sleepers to drift off before they emerge to feed on blood. Though they have coexisted with humans for millennia, a mid‑19th‑century decline in the developed world gave way to a resurgence in recent decades.
Urban centers across the United States and Canada have reported rapid outbreaks that spread quickly and prove difficult to contain. Bedbugs are remarkably resilient; they can survive months without feeding, often nesting deep within walls or floorboards to avoid detection.
Compounding the problem, many populations of bedbugs have begun developing resistance to conventional insecticides. While some municipalities have launched public‑health campaigns to control infestations, the most reliable eradication method remains heating affected spaces to temperatures above 50 °C (122 °F)—a solution that is impractical for many homeowners.
1 Homo Sapiens
Yes, you read that correctly—humans themselves make the top of this list. The Voluntary Human Extinction Movement (VHEMT), led by spokesperson Les Knight, argues that humanity’s relentless exploitation of the planet warrants a voluntary, child‑free existence to allow other species to thrive.
VHEMT’s philosophy is non‑violent; members simply pledge to abstain from procreation, believing that a gradual human decline will reduce environmental pressure and spare countless other species from extinction.
While the logic is stark—if Homo sapiens vanished, the ecological footprint would disappear, potentially rescuing many other organisms—the movement faces an uphill battle. With a global population hovering around 7.5 billion, convincing enough individuals to forgo reproduction seems an almost impossible task. Nonetheless, the group serves as a provocative reminder that no species willingly walks into its own demise.