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Trigger alert/warning: Graphic images of animals being tested on are linked in this article.

It could be said that animal testing saves lives. It could also be said that animals experience the cruel and unusual treatment as they’re being tested. Both of these statements are true and the question is, which of them do you choose to stand behind?

The following statistics and photos tell the truth. They’re facts we need to know so we can put our heads on the pillow at night and feel like we’ve made the right decision.

Animal testing happens all over the world. It’s not something Americans created… it goes all the way back to Aristotle in ancient Greece who practiced biomedical research on animals.

So let’s roll up our sleeves and pull back the curtain to learn if abusing animals to save human lives is worth it.

Overview of Animal Testing

It’s a touchy subject. Animal testing has camps on both sides and both consist of advocates: Testing advocates and animal advocates. All over the world, animal tests are being conducted as we speak that protect human life by torturing animals.

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The sheer number of animals killed and abused is staggering since even the abuse of one animal should be unacceptable. On the flip side, countless human lives have been saved from this testing.

Full disclosure: Having been a staunch animal advocate for decades, you would think you know exactly where I stand. The truth is, it’s complicated. I’m on life-saving medication that has been tested on animals. So am I a hypocrite for wanting animal testing to stop while continuing to take my medication?

Here’s the answer: I stand with the animals. I would have been horrified if I had known what they go through when I started my medicinal treatment. But I didn’t! Now, I know what I know, and it’s too late to help the animals who suffered for me to be able to live a life worth living.

Will I continue to take medication? Yes. Will I continue to advocate for animals who go through hell to save human lives? Yes. Call me a hypocrite!

Top Animal Testing Countries Worldwide

Numbers in 2020 – By RSPCA

  • United States 20 million
  • China 16 million
  • Japan 11 million
  • European Union 9.4 million
  • Australia 6.7 million
  • Canada 4.3 million
  • New Zealand .24 million
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Cruelty-Free International says that approximately 80 million animals were used in scientific experimentation, and others were employed for tissue engineering.

Unfortunately, no accurate figures are available to determine precisely how many animals are used in experiments in the U.S. or worldwide. (source)

We have official numbers that have been submitted to the government, but testers don’t count all animals.

General Statistics About Animal Testing

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Almost 99% of the Animals Used for Scientific Experiments Are Not Included in Federal Animal Protection Laws. (PETA)

The Animal Welfare Act (AWA) was passed in 1966 and protects dogs, cats, monkeys, guinea pigs, rabbits, and some other warm-blooded animals IN SOME WAYS.

While the AWA regulates the housing and transportation of animals used for research, it does not regulate the experiments themselves. – (source)

The law also does NOT protect birds, rats, mice, amphibians, reptiles, crustaceans, fish, farm animals (including livestock and poultry), and the like. It’s a flimsy attempt to answer the masses of opponents.

More Than 3 Lac Animals Covered by Animal Welfare Act (AWA) Were Subjected to Cruel Experimentation From Years 2015–2019 (PETA)

What’s even more heartbreaking is the fact that these animals didn’t receive any pain relief while the experiments were conducted, leaving them to suffer from inflammation, ulcers, bleeding, irritated and cloudy eyes, blindness, redness, swelling, discharge, and hemorrhaging. (source)

56% of US Citizens Believe Animals Used for Scientific Experimentation Are ‘Ethically Acceptable.’ (Gallup)

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With more than half of America agreeing with such egregious practices, animal advocates face a tougher battle in their fight to end animal testing.

Yearly 750,000 Animals Die in Just a Single Experiment. (About Animal Testing)

Experimenters often want answers “yesterday” and this causes animals to be susceptible to overdose.

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“In fact, researchers might use concentrations of the chemical that are thousands of times higher than someone would experience in a typical real-world exposure.” – (source)

68% of UK Nationals Are Against the Idea of Animal Testing. (AnimalFreeResearchUK)

In the UK, researchers must prove a test cannot be done by using any other format (computer model, human volunteer, etc.) and that it must be tested on an animal.

Almost 90% of the Novel Drugs Aren’t Consumed by Patients. (National Institutes of Health – NIH)

When this much medicine isn’t even used after being tested, why are the taxpayers/government wasting billions of dollars on animal testing?

Stats of 560,000 Experiments Show Animals Went Through a Lot of Pain During Experimentations (HSI)

Poking, prodding, burning, stabbing, and drowning are just a few of the horrors animals experience when tested on.

It Takes Nearly 10 Years To Commercialize a Single Registered Pesticide. (HSI)

In ten years, many millions of animals are being tested. Is it worth it?

41% of UK Nationals Think Animal Testing Organizations Are Secretive. (Ipsos)

“The [UK] Government is facing a High Court challenge over allegations it “secretly” abandoned a more than two-decade-old ban on testing cosmetic product ingredients on animals.” (source)

Almost 50 Research Tests Are Available That Don’t Include Animal Testing. (AltTox)

We already have options but not a government willing to stop the tide of cruelty that is animal testing. Areas like human cell-based research, computer models, and human volunteers have all been proven to work.

By 2025, the Environmental Protection Agency (EPA) Has Planned To Reduce the Testing of Mammals by 30%. (NY Times)

It’s a start. And it’s interesting to know a government agency realizes how unnecessary animal testing is.

Animal Testing Statistics Worldwide

The Humane Society of the US reports that as of now, 42 countries have full or partial bans on cosmetics animal testing, including all European Union countries, Australia, India, Israel, Mexico, New Zealand, Norway, and South Korea.

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It Is Estimated That Almost 192.1 Million Animals Were Tested in Scientific Laboratories in 2015 (PETA)

The People for the Ethical Treatment of Animals (PETA) organization rightly includes ALL animals in their estimates.

123 Skin Irritation Tests Were Conducted on Rabbits in the UK in 2018. (Cruelty-Free International – CFI)

We must be reminded that although it may seem unharmful to shave off a rabbit’s fur and apply an unknown topical substance, the results could burn, sting, and even maim an animal.

In 2018, 12.3 Million Experiments Were Conducted on Animals in Europe. (CFI)

Although cosmetics testing on animals is banned under EU Cosmetics Regulation, the European Chemicals Agency and the European Commission argue that even ingredients used exclusively in cosmetics may be tested on animals under EU chemicals legislation REACH, if there is a possibility of workforce exposure. – (source)

To this day, ignorance is alive and well. “Workforce exposure?” The makeup I wear cannot harm anyone else if it’s not harming me. Why does this even need to be said?

In the UK, Almost 2.9 Million Animals Were Used for Testing in 2020. (CFI)

Although it doesn’t make it right, in comparison to America’s testing number of well over 20 million animals for the same year, it seems like only a few.

Animal Testing Statistics in the US

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It Is Estimated More Than 50 Million Animals Are Killed in the U.S. Annually for Experimentation Purposes. (HSUS)

The HSUS states in no uncertain terms there are no absolute numbers for animal testing. These are the only statistics that have been reported.

The industry has been shrouded in mystery since its inception. We’ll never know the true number of animal lives lost and abused from testing.


  • 53% of research is on guinea pigs, hamsters, and rabbits.
  • 10% is on dogs or cats
  • 9% on non-human primates
  • The highest number of (protected) animals for research is in Massachusetts state of the US. (United States Department of Agriculture – USDA)
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Each year, the Animal Legal Defense Fund publishes its U.S. State Animal Protection Laws Rankings Report. Each state is ranked based on 20 different categories of animal protection.

Massachusetts is in the #6 spot of the Top Tier in the US. The state has:

  • Felony provisions for cruelty, neglect, fighting, abandonment, and sexual assault
  • Mandatory post-conviction forfeiture
  • Protection orders may include animals
  • California used the highest number of cats for animal testing back in 2020 (Procon)

In January 2020, CA passed the California Cruelty-Free Cosmetics Act, however with the above statistic, it seems they’ve taken two steps forward and two steps back.

More Than 70% of the Research Monkeys in the US Were Imported From China (Wiley)

China is the 2nd country that conducts the most animal testing (right behind the US) so the two countries have no grief over these transactions.

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Almost 85–95% of the Animals in the USA Are Not Protected by Any Laws (ALDF)

Due to major loopholes in animal cruelty laws, animals don’t get the protection they really deserve. Those without protection are complex beings who think and feel pain, just the same as those who have legal protections. (source)

Approximately 47% of the NIH Budget, Which Accounts for $14.5 Billion, Goes for Animal Experimentation in the US Annually. (ALDF)

With that budget, the US could fund computer, cell, and human experimentation.

52% of Adults in the U.S Are Against Animal Experimentation (PETA)

America seems to be split between proponents and opponents of animal testing. Unless more opponents make sure their voices are heard, the issue is a non-issue to the government.

Frequently Used Animals for Experimentation Globally

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In 2018, 52.1% of Mice Were Involved in Research Experiments Conducted in Europe (European Union)

Although Oxford defines “animal” as being… a living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli… apparently mice aren’t seen as animals by those who experiment on them.

The US Conducts Almost 53% of Its Scientific Research on Rabbits, Pigs, and Hamsters (Speaking of Research US)

Speaking of what is an animal, these creatures are living, breathing beings. Smaller animals are easier to handle and control thereby making them the “guinea pigs” (which are also one of the top animals tested on).

Back in 2020, 54% of the Scientific Experiments Were Conducted on Different Animals in the UK Universities (UK Gov)

This is a shocking statistic since the UK has always been more progressive than the US about ending animal testing AND… 68% of UK nationals are against the idea of animal testing. (source)

NIH Has More Than 7,000 Research Monkeys (Science)

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The uptick—to nearly 76,000 nonhuman primates in 2017—appears to reflect growing demand from scientists who believe nonhuman primates are more useful than other animals, such as mice or dogs, for testing drugs and studying diseases that also strike humans. – (source)

Then there’s this from the same source:

…importing monkeys to the United States has become increasingly difficult as almost all commercial air carriers now refuse to fly the animals.

Also, although chimpanzees haven’t been tested on since 2015 due to federal protection, there are still hundreds in laboratories languishing, waiting to be saved.

But there is a bit of good news:

Harvard University closed its national primate research center—one of only eight in the country—in 2015, after a federal investigation into the deaths of four of its animals. That same year, NIH ended its support of all invasive chimpanzee studies, citing a report that found these animals were no longer essential to biomedical research. And in 2016, Congress directed NIH to hold a workshop on the utility and ethics of monkey research. – (source)

Advantages of Animal Testing Statistics

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For Medical Purposes, 43% of the People Consider It Acceptable (Speaking of Research)

Different organizations have their own statistics but generally, they’re in the same ballpark. This particular stat shows that people see the medical advancements testing on animals has provided and so agree. They believe the ends justify the means.

And they have weighty institutions behind them:

Animal research has clearly been an important contributor to improved human health. (National Library of Medicine)

Interesting Animal Testing Facts Show That the Lifespan of Mice Is 2–3 Years. (The Jackson Laboratory)

And they will spend their entire lives trapped behind bars while having horrific tests (like being force-fed chemicals) administered on them.

Almost 70% of Nobel Prize Achievers Made Discoveries via Animal Testing. (Medical Advances)

Is this fact supposed to be a reason why we torture animals?

Animal Testing Stats Revealed a Reduction Rate in Polio Disease Occurrence. (WHO)

There’s no denying animal testing has medically advanced our world. But if we have the knowledge and the tools to test with animals, we also have the knowledge and tools to discover alternate solutions.

Cost of Animal Testing Statistics

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One Registered Pesticide Costs 3,000,000 (3 Million) Dollars To Test. (Humane Society International – HSI)

This money could be used to find those alternate solutions.

Twelve Billion Dollars in Taxpayer Money (47% of NIH’s Research Budget) Is Spent on Animal Testing Yearly. (PETA)

Can you imagine the things that could be paid for like research equipment, computers, techniques, the brightest minds… and all without abusing an animal.

Animal Testing Cosmetics Statistics

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Statistics Depict if Animals Are Not Killed During Experimentation, They Die at the End of the Research. (Humane Society)

Approximately 500,000 animals are used in cosmetics safety testing throughout the world each year. (Humane Society International)

1996: Animal protection groups band together to form the Coalition for Consumer Information on Cosmetics. The coalition manages the Leaping Bunny cruelty-free certification program in the United States and Canada. (HSUS)

1998: The United Kingdom bans animal testing for cosmetic products and ingredients. (HSUS) Note: In January 2023, Parliament is investigating to see if the government has abandoned this policy.

On Sep. 2, 2021, Mexico became the 41st country and first in North America to ban cosmetics testing on animals, according to the Humane Society International. –

Cosmetics tests on animals are some of the most excruciating experiments for animals to experience. And for what? So we can look good wearing lipstick?

Accuracy of Animal Testing Statistics

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Only About 8% of the Drugs Tested on Animals Have Been Commercialized. (PETA)

Not only are the animals looked at as being replaceable, but this is also how few drugs reach the market.

95% of the Drugs Which Prove Potency in Animals Have Failed in Humans. (PETA)

A 2014 review published in the British Medical Journal found that “even the most promising findings from animal research often fail in human trials and are rarely adopted into clinical practice.” (source)

100 HIV Vaccines Are Effective in Animals but Have Shown No Results in Humans. (PETA)

This is alarming! We can very well gauge the authenticity and effectiveness of using animals for human medications.

In the First Phase of Clinical Trials, More Than 93% of the Chemotherapeutic Drugs Tested on Animals Previously Were Rejected. (PETA)

Ninety-two percent of all drugs shown to be safe and effective in animal experiments in the United States fail in human trials because the drugs don’t work or are dangerous. (United States Food and Drug Administration)

Animal Testing Alternatives Statistics

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Cell-Based Alternatives To Check Crude Skin Allergy Showed Improved Results (From 72–85%) (Cruelty-Free)

For example, MatTek Life Sciences’ EpiDerm™ Tissue Model is 3-dimensional and derived from human cells. Rabbits would no longer be used to test chemicals.

Employing Reconstituted Human Skin Improved the Accuracy of Evaluating Skin Irritation by 86%. (CrueltyFree)

Using human skin is much more reliable than an animal’s and could provide more accurate results.

Stem Cells Have a Higher Sensitivity of 93% To Detect Problematic Substances in the Fetus. (Cruelty-Free)

This type of research could replace the current procedure of purposefully impregnating animals only to eventually kill the fetus/baby.

More Than $420 Million Has Been Spent To Find Alternatives to Animal Testing. (ChemicalWatch)

Compared to the billions spent testing on animals, this cost is minimal.

Testing on humans isn’t a pipe dream that couldn’t possibly happen due to ethical and humane reasons. Cosmetics testing could be administered to human volunteers.

Computer Models Can Conduct “Virtual Experiments Based on Existing Information and Mathematical Data,” (Cruelty-Free International via Green Matters)

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Animals are used in research to improve the health and welfare of humans and animals and to gain basic knowledge that cannot be gained in other ways. – National Library of Medicine

“…that cannot be gained in other ways.” This is just untrue. As we’ve just discussed, there ARE other ways to “gain basic knowledge” other than from animal trials and testing.


What Is Animal Testing?

Animal testing involves doing scientific tests on animals when developing new products or drugs.

What Is the Rate of Animal Survival in Animal Testing?

First, we must take into account that an animal might live through testing but have mutations, illnesses, injuries, and low quality of life. The rate of animal survival in animal testing is… there are no statistics on how many animals are killed or die from animal testing.

However, we know most are killed since there’s no influx of laboratory animals arriving at shelters or sanctuaries. Additionally, they’re killed so technicians can study their organs (which includes the brain), tissues, and cells.

What Is the Success Rate of Animal Testing?

“The unreliability of animal experimentation across a wide range of areas undermines scientific arguments in favor of the practice.” – National Library of Medicine

Just because there are people who think animal testing is successful doesn’t justify the ways and means of administering it.

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What Is the Animal Testing Death Rate?

One animal dies in a laboratory in the United States every second, in Japan every two seconds, and in the United Kingdom every 12 seconds. (British Union for the Abolition of Vivisection)

Statistics depict that if animals are not killed during experimentation, they die at the end of the research. (Humane Society)

There are currently no reliable statistics on the death rate of animals used for animal testing. The number is too high.

What Is the Importance of Animal Testing?

Animal testing has:

  1. Improved human health
  2. Saved human lives
  3. Contributed to people getting better nutrition
  4. Approved the release of and prevented certain medications from being available to the public
  5. Helped people who need organ transplants
  6. Prevented disease and illnesses.

And more.

But is the tradeoff worth it? Is it ethical? Is it moral? Is it right? When does our conscience show up and say, “No more.”

What Type of Testing Is Performed on Animals?

DOGS – Dogs have their organs deliberately harmed or removed to test how organ function in humans will react to certain substances.

CATS – “They have their spinal cords damaged and are forced to run on treadmills to study how nerve activity might affect human limb movement.” (HSUS)

MONKEYS – Monkeys are removed from their mothers at birth to study how extreme stress will affect humans.

MICE – Mice are force-fed chemicals daily to see how it affects them and if it would be damaging to humans.

FERRETS – Ferrets are infected with potentially fatal diseases (COVID-19, Ebola, etc.) with no anesthesia or treatment to see how humans would be affected by the same illness/disease.

PIGS – Pigs have devices implanted like pacemakers to see the effects.

RABBITS – Rabbits that are pregnant are force-fed toxic pesticides daily to study how human mothers and babies could be affected.

SHEEP – Sheep are forced to experience extremely high pressures like deep water to watch their response.

RATS – Rats are stuck in small tubes and forced to inhale cigarette smoke to see the effects of cigarette smoke.

BABOONS – Baboons are injected with endometrial tissue to induce endometriosis which is extremely painful in order to witness the possible effects on humans.

HORSES – Horses are infected with potentially fatal viruses, like hepatitis, to study reactions in order to obtain data.

All of the above information was published by the Humane Society of the United States (HSUS).

This was difficult to even write. Can you imagine the horrors these animals experience daily? We know all this information due to the courageous people who have infiltrated laboratories, taken pictures, and researched the tests being given. The examples given are only a small fraction of the testing they put animals through.

The painful experiments administered last days, months, or years and largely end in death either from what has been given to animal species or if there’s no more use for them.

Where Do Laboratories Get the Animals They Use in Experiments?

Most of the animals are purpose-bred or bred only for the reason of being used in experiments. Also…

  1. Birds, monkeys, and other wildlife are taken from the wild.
  2. Animals are taken from animal shelters.
  3. Trapping stray animals.
  4. From Class B dealers who get animals from auctions, newspaper ads, online sales, and other sources. (Although Congress passed legislation in 2015 to stop Class B dealers from operating, the practice is still thriving.)

“Some cats and dogs in laboratories are still obtained directly from animal shelters, a practice known as “pound seizure.” Pound seizure laws vary from state to state with one state (Oklahoma) requiring shelters to give cats and dogs to laboratories, rather than euthanizing them…” (HSUS)

Why Is Animal Testing Cruel?

Oxford defines “cruel” as: willfully causing pain or suffering to others, or feeling no concern about it. The example provided is “people that are cruel to animals.” Additionally, I believe we’ve covered the cruelty of animal testing.

In Conclusion

The USDA (United States Department of Agriculture) Animal Care inspectors are supposed to conduct unannounced inspections, but there are far too few inspectors vs. the number of facilities that need an inspection. Bottom line? They’re underfunded and understaffed.

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Due to the tireless efforts of organizations like PETA, facts have been made available to the public that would have never been known. There shouldn’t be a debate as to IF animals are traumatized by testing. We know they are.

You just need to decide if you would speak out against it by contacting animal rights organizations to ask what you can do to make a stand. Or write your Congress person. Or post on social media. Or do nothing and stay silent.

I’m grateful for their efforts… I’m willing to continue buying only products with the bunny on them… I’m for the animals. Are you?


Animal Testing Statistics - Eye-Opening Facts You Must Know!? ›

Testing on animals has saved and improved millions of lives. Animal testing has benefited researchers in understanding how to treat and prevent various conditions such as high blood pressure, diabetes, tuberculosis, poliomyelitis, muscular dystrophy, and Parkinson's disease.

What are good things about animal testing facts? ›

Testing on animals has saved and improved millions of lives. Animal testing has benefited researchers in understanding how to treat and prevent various conditions such as high blood pressure, diabetes, tuberculosis, poliomyelitis, muscular dystrophy, and Parkinson's disease.

What is the most common things tested on animals? ›

Cosmetics (such as shampoo, deodorant and lipstick) and household products (such as dish soap, laundry detergent and glass cleaner) are typically tested on guinea pigs, rabbits, mice and rats.

What are 4 accomplishments due to animal testing? ›

Surgical procedures, pain relievers, psychoactive drugs, medications for blood pressure, insulin, pacemakers, nutrition supplements, organ transplants, treatments for shock trauma and blood diseases—all have been developed and tested in animals before being used in humans.

How many animals are killed due to animal testing? ›

Each year, it is estimated that more than 50 million dogs, cats, monkeys, rabbits, rats and other animals are forced to endure painful experiments in the U.S. These animals are deliberately sickened with toxic chemicals or infected with diseases, live in barren cages and are typically killed when the experiment ends.

Why is animal testing wrong facts? ›

Imprecise results from animal experiments may result in clinical trials of biologically faulty or even harmful substances, thereby exposing patients to unnecessary risk and wasting scarce research resources. Animal toxicity studies are poor predictors of toxic effects of drugs in humans.

What are the pros and cons of animal testing? ›

Using Animals for Testing: Pros Versus Cons
  • Improves human health: ...
  • Helps ensure safety of drugs: ...
  • Alternative methods of testing do not simulate humans in the same way. ...
  • Some substances tested, may never be used for anything useful: ...
  • It is very expensive: ...
  • Animals and humans are never exactly the same:

How animal testing helped humans? ›

Scientific research on animals helps develop antibiotics and other medications, as well as immunizations and surgical procedures. Animals are used in the testing of consumer products such as perfumes and shampoos. Animals are also used to educate students in biology, medicine, and related fields.

Does animal testing do more harm or good? ›

Because animal tests are so unreliable, they make those human trials all the more risky. The National Institutes of Health (NIH) has noted that 95 percent of all drugs that are shown to be safe and effective in animal tests fail in human trials because they don't work or are dangerous.

Does animal testing save lives? ›

Animal Research Helps People and Animals

Polio, smallpox, diphtheria, cholera and measles are no longer major threats to public health in the United States. Sophisticated diagnostic tests mean early treatment of cancer and heart disease.

How effective is animal testing? ›

According to the U.S. Food and Drug Administration (FDA), just 8% of drugs tested on animals are deemed safe and effective for human use — 92% are not.

How animal testing violates animal rights? ›

Yet animals' rights are violated when they are used in research because they are not given a choice. Animals are subjected to tests that are often painful or cause permanent damage or death, and they are never given the option of not participating in the experiment.

What harmful products are tested on animals? ›

Around the world, millions of lab animals are used in tests to assess the safety of chemicals.
This includes:
  • paints.
  • dyes.
  • plastics.
  • pesticides.
  • household cleaners.
  • cosmetics.
  • food additives.
  • medicines and vaccines.

How many animal tests fail? ›

1. More than 90% of basic scientific discoveries, most of which are from experiments on animals, fail to lead to human treatments.

What are 3 examples of animal testing? ›

Examples of animal tests include forcing mice and rats to inhale toxic fumes, force-feeding dogs pesticides, and applying corrosive chemicals into rabbits' sensitive eyes. Even if a product harms animals, it can still be marketed to consumers.

What are examples of failed animal testing? ›

The following are just a few examples of the procedures that experimenters have conducted on animals:
  • Experimenters Drugged Alligators and Drilled Holes Into Their Skulls. ...
  • Monkeys Were Cloned and Plagued With Mental Health Problems. ...
  • Experimenters Pulled Dogs' Teeth Out, Cut Their Gums Apart, and Killed Them.
Aug 13, 2019

How are animals killed after testing? ›

Experimenters force animals to inhale toxic fumes, immobilize them in restraint devices, drill holes into their skulls, mutilate their brains, and burn their skin and eyes—and if the animals don't die in the process, they're killed afterward.

What animal is dying from animal testing? ›

Most animals are killed at the end of an experiment, but some may be re-used in subsequent experiments. Here is a selection of common animal procedures: Forced chemical exposure in toxicity testing, which can include oral force-feeding, forced inhalation, skin or injection into the abdomen, muscle, etc.

Do only 3 percent of animals survive animal testing? ›

As it turns out, the vast majority of animals - 97 percent - are killed at the end of experimentation. Just a small fraction of animals, 6,286 in total, were returned to nature or to their habitat. Of those returned to their natural habitat, 893 were cows, 750 were fish and 45 were bats.

Is animal testing always cruel? ›

Due to the combination of low accuracy and high amounts of pain, it is difficult to argue that animal testing is not cruel. Animals such as rats, mice, dogs and chimpanzees are burned, poisoned, crippled, starved or abused in other ways via drugs, confinement or other invasive procedures.

Is animal testing ever justified? ›

Scientists justify animal use in medical research because the benefits to human health outweigh the costs or harms to animals. However, whether it is justifiable is controversial for many people.

Why shouldn't we ban animal testing? ›

Proponents of animal testing say that it has enabled the development of many life-saving treatments for both humans and animals, that there is no alternative method for researching a complete living organism, and that strict regulations prevent the mistreatment of animals in laboratories.

Does all animal testing hurt animals? ›

Most animals experience only minimal pain or brief discomfort when they are used in research.

Is animal testing worthless? ›

Our research has shown that using dogs, rats, mice and rabbits to test whether or not a drug will be safe for humans provides statistically little useful insight. Our study also revealed that drug tests on monkeys are just as poor as those using any other species in predicting the effects on humans.

What is the biggest problem with animal testing? ›

Reliance On Animal Experimentation Can Impede and Delay Discovery. Drugs and procedures that could be effective in humans may never be developed because they fail in animal studies. It is difficult to know how frequently this occurs, since drugs that fail in animals are rarely tested in humans.

What animals are tested on? ›

Each year, more than 110 million animals—including mice, rats, frogs, dogs, cats, rabbits, hamsters, guinea pigs, monkeys, fish, and birds—are killed in U.S. laboratories for biology lessons, medical training, curiosity-driven experimentation, and chemical, drug, food, and cosmetics testing.

When did animal testing start? ›

Ibn Zuhr (Avenzoar), an Arab physician in twelfth century Moorish Spain, introduced animal testing as an experimental method for testing surgical procedures before applying them to human patients.

Is animal testing moral? ›

Animal experiments and animal rights

The issue of animal experiments is straightforward if we accept that animals have rights: if an experiment violates the rights of an animal, then it is morally wrong, because it is wrong to violate rights.

Why animal testing is the best? ›

Animals are good research subjects for a variety of reasons. They are biologically similar to humans and susceptible to many of the same health problems. Also, they have short life-cycles so they can easily be studied throughout their whole life-span or across several generations.

Why would we test on animals? ›

Animal studies conducted in the laboratory allow scientists to control factors that might affect the outcome of the experiments. This includes factors like temperature, humidity, light, diet, or medications.

How much money is wasted on animal testing? ›

The United States wastes almost half its research funding on archaic animal experiments. Meanwhile, more than 90 percent of highly promising basic science discoveries don't lead to treatments for humans, and up to 89 percent of research is irreproducible — a fundamental step in science — wasting $28 billion every year.

How often is animal testing used? ›

More than 100 million animals are used in research and testing across the world each year, including around four million in the UK (Animals in science infographic. Animals used in scientific procedures can and do experience pain, suffering and distress, which can be severe.

What law banning animal testing? ›

The Animal Welfare Act (AWA) was signed into law on August 24, 1966. It is the only Federal law in the United States that regulates the treatment of animals in research, teaching, testing, exhibition, transport, and by dealers. The Act is enforced by USDA , APHIS , Animal Care.

How long do animal experiments last? ›

These tests are conducted to evaluate drug safety in two different animal species, with animals receiving high doses of the new drug for 30 or 90 days. Animals are carefully monitored for side effects. After the study period, pathologists examine their organs for signs of drug toxicity.

What states banned animal testing? ›

We are also working in several U.S. states to pass legislation that would end cosmetics testing on animals. As of December 2022, ten states (California, Hawaii, Illinois, Louisiana, Maine, Maryland, Nevada, New Jersey, New York and Virginia) have passed laws banning cosmetics animal testing.

Why is animal testing good statistics? ›

There are several reasons why the use of animals is critical for biomedical research: Animals are biologically very similar to humans. In fact, mice share more than 98% DNA with us! Animals are susceptible to many of the same health problems as humans – cancer, diabetes, heart disease, etc.

Why is animal testing an interesting topic? ›

Animals are good research subjects for a variety of reasons. They are biologically similar to humans and susceptible to many of the same health problems. Also, they have short life-cycles so they can easily be studied throughout their whole life-span or across several generations.

What are the statistics of animal testing not working? ›

More than 90% of basic scientific discoveries, most of which are from experiments on animals, fail to lead to human treatments.

What percentage of animal testing is successful? ›

According to the U.S. Food and Drug Administration (FDA), just 8% of drugs tested on animals are deemed safe and effective for human use — 92% are not.

Why do most animal testing fail? ›

Animal Studies Do Not Reliably Predict Human Outcomes

Both obvious and subtle differences between humans and animals, in terms of our physiology, anatomy, and metabolism, make it difficult to apply data derived from animal studies to human conditions.

What are horrible facts about animal testing? ›

Over 100 million animals are burned, crippled, poisoned, and abused in US labs every year. 92% of experimental drugs that are safe and effective in animals fail in human clinical trials because they are too dangerous or don't work.

What are the dangers of animal testing? ›

All procedures, even those classified as “mild,” have the potential to cause the animals physical as well as psychological distress and suffering. Often the procedures can cause a great deal of suffering. Most animals are killed at the end of an experiment, but some may be re-used in subsequent experiments.

What is an example of animal testing gone wrong? ›

Experimenters Castrated Monkeys and Regrew Their Testicles

Experimenters castrated five young monkeys, chopped their testicles into tiny pieces, and then regrew these organs on their backs in an attempt to produce viable sperm. It's as disturbing as it is sadistic – and these monkeys weren't the only victims.

Is animal testing a waste of time? ›

Although humans often benefit from successful animal research, the pain, the suffering, and the deaths of animals are not worth the possible human benefits. Therefore, animals should not be used in research or to test the safety of products.

How is animal testing unnecessary? ›

So, drugmakers often end up conducting needless animal tests, even when they would prefer to use more effective and efficient alternatives. The National Institutes of Health estimates that over 90 percent of drugs fail in human trials because animal tests don't accurately predict their safety or effectiveness.

Which animal is tested the most? ›

Uses in Research. Mice and rats make up approximately 95% of all laboratory animals, with mice the most commonly used animal in biomedical research.

How reliable is animal testing? ›

Animal tests do not reliably predict results in human beings. 94% of drugs that pass animal tests fail in human clinical trials. [57] According to neurologist Aysha Akhtar, MD, MPH, over 100 stroke drugs that were effective when tested on animals have failed in humans, and over 85 HIV vaccines failed…

What happens to animals after testing? ›

What happens to animals after the experiment? While some animals may be used again, or sometimes even adopted out, most animals are humanely euthanized. This is usually because certain information, such as organ samples, can only be taken after the animal is euthanized and the body subjected to further analysis.


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